70642260864 has 256 divisors, whose sum is σ = 239668992000. Its totient is φ = 20065646592.

The previous prime is 70642260859. The next prime is 70642260883. The reversal of 70642260864 is 46806224607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4176777 + ... + 4193655.

It is an arithmetic number, because the mean of its divisors is an integer number (936207000).

Almost surely, 2^70642260864 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 70642260864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119834496000).

70642260864 is an abundant number, since it is smaller than the sum of its proper divisors (169026731136).

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

70642260864 is a wasteful number, since it uses less digits than its factorization.

70642260864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17082 (or 17064 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 70642260864 in words is "seventy billion, six hundred forty-two million, two hundred sixty thousand, eight hundred sixty-four".