52178290816 has 32 divisors (see below), whose sum is σ = 103959323100. Its totient is φ = 26086539264.

The previous prime is 52178290807. The next prime is 52178290817. The reversal of 52178290816 is 61809287125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48706724416 + 3471566400 = 220696^2 + 58920^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 52178290816.

It is not an unprimeable number, because it can be changed into a prime (52178290817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2257816 + ... + 2280808.

Almost surely, 2^52178290816 is an apocalyptic number.

It is an amenable number.

52178290816 is a deficient number, since it is larger than the sum of its proper divisors (51781032284).

52178290816 is a wasteful number, since it uses less digits than its factorization.

52178290816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40736 (or 40724 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 52178290816 in words is "fifty-two billion, one hundred seventy-eight million, two hundred ninety thousand, eight hundred sixteen".