70136478720 has 1056 divisors, whose sum is σ = 313633152000. Its totient is φ = 14549483520.

The previous prime is 70136478707. The next prime is 70136478721. The reversal of 70136478720 is 2787463107.

It is a tau number, because it is divible by the number of its divisors (1056).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70136478721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117088981 + ... + 117089579.

Almost surely, 2^70136478720 is an apocalyptic number.

70136478720 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 70136478720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156816576000).

70136478720 is an abundant number, since it is smaller than the sum of its proper divisors (243496673280).

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

70136478720 is a wasteful number, since it uses less digits than its factorization.

70136478720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 70136478720 in words is "seventy billion, one hundred thirty-six million, four hundred seventy-eight thousand, seven hundred twenty".