52778189736 has 64 divisors (see below), whose sum is σ = 146688566400. Its totient is φ = 17582832000.

The previous prime is 52778189699. The next prime is 52778189741. The reversal of 52778189736 is 63798187725.

52778189736 is a `hidden beast` number, since 527 + 7 + 8 + 18 + 97 + 3 + 6 = 666.

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, 321181 + ... + 456851.

It is an arithmetic number, because the mean of its divisors is an integer number (2292008850).

Almost surely, 2^52778189736 is an apocalyptic number.

It is an amenable number.

52778189736 is an abundant number, since it is smaller than the sum of its proper divisors (93910376664).

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

52778189736 is a wasteful number, since it uses less digits than its factorization.

52778189736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137487 (or 137477 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 52778189736 in words is "fifty-two billion, seven hundred seventy-eight million, one hundred eighty-nine thousand, seven hundred thirty-six".