70420855680 has 576 divisors, whose sum is σ = 293382114480. Its totient is φ = 16094453760.

The previous prime is 70420855667. The next prime is 70420855693. The reversal of 70420855680 is 8655802407.

70420855680 is a `hidden beast` number, since 7 + 0 + 4 + 2 + 0 + 85 + 568 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (70420855667) and next prime (70420855693).

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7615860 + ... + 7625100.

Almost surely, 2^70420855680 is an apocalyptic number.

70420855680 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 70420855680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146691057240).

70420855680 is an abundant number, since it is smaller than the sum of its proper divisors (222961258800).

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

70420855680 is an equidigital number, since it uses as much as digits as its factorization.

70420855680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289 (or 9258 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 70420855680 in words is "seventy billion, four hundred twenty million, eight hundred fifty-five thousand, six hundred eighty".