64720760061704 has 16 divisors (see below), whose sum is σ = 121360483421100. Its totient is φ = 32357964482752.

The previous prime is 64720760061653. The next prime is 64720760061761. The reversal of 64720760061704 is 40716006702746.

It can be written as a sum of positive squares in 2 ways, for example, as 47354354102500 + 17366405959204 = 6881450^2 + 4167302^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301829639 + ... + 302043990.

Almost surely, 2^{64720760061704} is an apocalyptic number.

It is an amenable number.

64720760061704 is a deficient number, since it is larger than the sum of its proper divisors (56639723359396).

64720760061704 is a wasteful number, since it uses less digits than its factorization.

64720760061704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603887032 (or 603887028 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 64720760061704 in words is "sixty-four trillion, seven hundred twenty billion, seven hundred sixty million, sixty-one thousand, seven hundred four".