51086818375048 has 8 divisors (see below), whose sum is σ = 95787784453230. Its totient is φ = 25543409187520.

The previous prime is 51086818374971. The next prime is 51086818375067. The reversal of 51086818375048 is 84057381868015.

It can be written as a sum of positive squares in only one way, i.e., 42958035760644 + 8128782614404 = 6554238^2 + 2851102^2 .

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, 3192926148433 + ... + 3192926148448.

Almost surely, 2^{51086818375048} is an apocalyptic number.

It is an amenable number.

51086818375048 is a deficient number, since it is larger than the sum of its proper divisors (44700966078182).

51086818375048 is a wasteful number, since it uses less digits than its factorization.

51086818375048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385852296887 (or 6385852296883 counting only the distinct ones).

The product of its (nonzero) digits is 51609600, while the sum is 64.

The spelling of 51086818375048 in words is "fifty-one trillion, eighty-six billion, eight hundred eighteen million, three hundred seventy-five thousand, forty-eight".