511565115156 has 12 divisors (see below), whose sum is σ = 1193651935392. Its totient is φ = 170521705048.

The previous prime is 511565115071. The next prime is 511565115179. The reversal of 511565115156 is 651511565115.

511565115156 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 21315213120 + ... + 21315213143.

It is an arithmetic number, because the mean of its divisors is an integer number (99470994616).

Almost surely, 2^511565115156 is an apocalyptic number.

It is an amenable number.

511565115156 is an abundant number, since it is smaller than the sum of its proper divisors (682086820236).

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

511565115156 is a wasteful number, since it uses less digits than its factorization.

511565115156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42630426270 (or 42630426268 counting only the distinct ones).

The product of its digits is 112500, while the sum is 42.

The spelling of 511565115156 in words is "five hundred eleven billion, five hundred sixty-five million, one hundred fifteen thousand, one hundred fifty-six".