51686368332363 has 24 divisors (see below), whose sum is σ = 74693452560480. Its totient is φ = 34441260497280.

The previous prime is 51686368332343. The next prime is 51686368332383. The reversal of 51686368332363 is 36323386368615.

51686368332363 is a `hidden beast` number, since 5 + 1 + 6 + 8 + 6 + 368 + 33 + 236 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (51686368332343) and next prime (51686368332383).

It is not a de Polignac number, because 51686368332363 - 2⁵ = 51686368332331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51686368332363.

It is not an unprimeable number, because it can be changed into a prime (51686368332343) 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, 163054383 + ... + 163371063.

It is an arithmetic number, because the mean of its divisors is an integer number (3112227190020).

Almost surely, 2^{51686368332363} is an apocalyptic number.

51686368332363 is a deficient number, since it is larger than the sum of its proper divisors (23007084228117).

51686368332363 is a wasteful number, since it uses less digits than its factorization.

51686368332363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325219 (or 325216 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 63.

The spelling of 51686368332363 in words is "fifty-one trillion, six hundred eighty-six billion, three hundred sixty-eight million, three hundred thirty-two thousand, three hundred sixty-three".