51026386686372 has 18 divisors (see below), whose sum is σ = 128983366346198. Its totient is φ = 17008795562112.

The previous prime is 51026386686361. The next prime is 51026386686413. The reversal of 51026386686372 is 27368668362015.

51026386686372 is a `hidden beast` number, since 5 + 102 + 6 + 3 + 86 + 6 + 86 + 372 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32952375853056 + 18074010833316 = 5740416^2 + 4251354^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708699815053 + ... + 708699815124.

Almost surely, 2^{51026386686372} is an apocalyptic number.

It is an amenable number.

51026386686372 is an abundant number, since it is smaller than the sum of its proper divisors (77956979659826).

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

51026386686372 is a wasteful number, since it uses less digits than its factorization.

51026386686372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417399630187 (or 1417399630182 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 63.

The spelling of 51026386686372 in words is "fifty-one trillion, twenty-six billion, three hundred eighty-six million, six hundred eighty-six thousand, three hundred seventy-two".