70691954256 has 960 divisors, whose sum is σ = 268649472000. Its totient is φ = 17831923200.

The previous prime is 70691954243. The next prime is 70691954351. The reversal of 70691954256 is 65245919607.

70691954256 is a `hidden beast` number, since 7 + 0 + 6 + 91 + 9 + 542 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 894834825 + ... + 894834903.

It is an arithmetic number, because the mean of its divisors is an integer number (279843200).

Almost surely, 2^70691954256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70691954256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134324736000).

70691954256 is an abundant number, since it is smaller than the sum of its proper divisors (197957517744).

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

70691954256 is a wasteful number, since it uses less digits than its factorization.

70691954256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 70691954256 in words is "seventy billion, six hundred ninety-one million, nine hundred fifty-four thousand, two hundred fifty-six".