71357265720 has 96 divisors (see below), whose sum is σ = 249750446400. Its totient is φ = 17564864256.

The previous prime is 71357265709. The next prime is 71357265761. The reversal of 71357265720 is 2756275317.

71357265720 is a `hidden beast` number, since 7 + 1 + 3 + 5 + 72 + 6 + 572 + 0 = 666.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7618960 + ... + 7628319.

It is an arithmetic number, because the mean of its divisors is an integer number (2601567150).

Almost surely, 2^71357265720 is an apocalyptic number.

It is an amenable number.

71357265720 is an abundant number, since it is smaller than the sum of its proper divisors (178393180680).

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

71357265720 is a wasteful number, since it uses less digits than its factorization.

71357265720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15247309 (or 15247302 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 71357265720 in words is "seventy-one billion, three hundred fifty-seven million, two hundred sixty-five thousand, seven hundred twenty".