70898019655680 has 2688 divisors, whose sum is σ = 313150690944000. Its totient is φ = 15338307059712.

The previous prime is 70898019655679. The next prime is 70898019655681. The reversal of 70898019655680 is 8655691089807.

70898019655680 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (70898019655679) and next prime (70898019655681).

It is a tau number, because it is divible by the number of its divisors (2688).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 70898019655599 and 70898019655608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70898019655681) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 64865525214 + ... + 64865526306.

It is an arithmetic number, because the mean of its divisors is an integer number (116499513000).

Almost surely, 2^{70898019655680} is an apocalyptic number.

70898019655680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70898019655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156575345472000).

70898019655680 is an abundant number, since it is smaller than the sum of its proper divisors (242252671288320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70898019655680 is an equidigital number, since it uses as much as digits as its factorization.

70898019655680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 72.

The spelling of 70898019655680 in words is "seventy trillion, eight hundred ninety-eight billion, nineteen million, six hundred fifty-five thousand, six hundred eighty".