5156521008712 has 8 divisors (see below), whose sum is σ = 9668476891350. Its totient is φ = 2578260504352.

The previous prime is 5156521008647. The next prime is 5156521008721. The reversal of 5156521008712 is 2178001256515.

It can be written as a sum of positive squares in only one way, i.e., 4891413415716 + 265107592996 = 2211654^2 + 514886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322282563037 + ... + 322282563052.

Almost surely, 2^{5156521008712} is an apocalyptic number.

It is an amenable number.

5156521008712 is a deficient number, since it is larger than the sum of its proper divisors (4511955882638).

5156521008712 is a wasteful number, since it uses less digits than its factorization.

5156521008712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644565126095 (or 644565126091 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 43.

The spelling of 5156521008712 in words is "five trillion, one hundred fifty-six billion, five hundred twenty-one million, eight thousand, seven hundred twelve".