71721567750010 has 32 divisors (see below), whose sum is σ = 129423354318720. Its totient is φ = 28616539564608.

The previous prime is 71721567749929. The next prime is 71721567750029. The reversal of 71721567750010 is 1005776512717.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16749969 + ... + 20591371.

It is an arithmetic number, because the mean of its divisors is an integer number (4044479822460).

Almost surely, 2^{71721567750010} is an apocalyptic number.

71721567750010 is a deficient number, since it is larger than the sum of its proper divisors (57701786568710).

71721567750010 is a wasteful number, since it uses less digits than its factorization.

71721567750010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846102.

The product of its (nonzero) digits is 720300, while the sum is 49.

The spelling of 71721567750010 in words is "seventy-one trillion, seven hundred twenty-one billion, five hundred sixty-seven million, seven hundred fifty thousand, ten".