70721255288 has 32 divisors (see below), whose sum is σ = 132813246720. Its totient is φ = 35304444000.

The previous prime is 70721255243. The next prime is 70721255291. The reversal of 70721255288 is 88255212707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19802543 + ... + 19806113.

It is an arithmetic number, because the mean of its divisors is an integer number (4150413960).

Almost surely, 2^70721255288 is an apocalyptic number.

It is an amenable number.

70721255288 is a deficient number, since it is larger than the sum of its proper divisors (62091991432).

70721255288 is a wasteful number, since it uses less digits than its factorization.

70721255288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819 (or 6815 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 47.

The spelling of 70721255288 in words is "seventy billion, seven hundred twenty-one million, two hundred fifty-five thousand, two hundred eighty-eight".