51071086800684 has 72 divisors (see below), whose sum is σ = 129172455659520. Its totient is φ = 17013662172000.

The previous prime is 51071086800683. The next prime is 51071086800691. The reversal of 51071086800684 is 48600868017015.

It is a happy number.

51071086800684 is a `hidden beast` number, since 510 + 7 + 1 + 0 + 8 + 68 + 0 + 0 + 68 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51071086800684.

It is not an unprimeable number, because it can be changed into a prime (51071086800683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1447616557 + ... + 1447651835.

It is an arithmetic number, because the mean of its divisors is an integer number (1794061884160).

Almost surely, 2^{51071086800684} is an apocalyptic number.

It is an amenable number.

51071086800684 is an abundant number, since it is smaller than the sum of its proper divisors (78101368858836).

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

51071086800684 is a wasteful number, since it uses less digits than its factorization.

51071086800684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57851 (or 57846 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 51071086800684 in words is "fifty-one trillion, seventy-one billion, eighty-six million, eight hundred thousand, six hundred eighty-four".