51086818375047 has 192 divisors, whose sum is σ = 97769078507520. Its totient is φ = 26115493824000.

The previous prime is 51086818374971. The next prime is 51086818375067. The reversal of 51086818375047 is 74057381868015.

51086818375047 is a `hidden beast` number, since 5 + 1 + 0 + 86 + 8 + 18 + 37 + 504 + 7 = 666.

It is not a de Polignac number, because 51086818375047 - 2¹⁴ = 51086818358663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51086818375067) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 106239118 + ... + 106718900.

It is an arithmetic number, because the mean of its divisors is an integer number (509213950560).

Almost surely, 2^{51086818375047} is an apocalyptic number.

51086818375047 is a deficient number, since it is larger than the sum of its proper divisors (46682260132473).

51086818375047 is a wasteful number, since it uses less digits than its factorization.

51086818375047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480011 (or 479998 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 51086818375047 in words is "fifty-one trillion, eighty-six billion, eight hundred eighteen million, three hundred seventy-five thousand, forty-seven".