51886940965314 has 128 divisors (see below), whose sum is σ = 130186926051840. Its totient is φ = 13420556457984.

The previous prime is 51886940965219. The next prime is 51886940965319. The reversal of 51886940965314 is 41356904968815.

It is a super-2 number, since 2×51886940965314² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51886940965319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67826502 + ... + 68587230.

It is an arithmetic number, because the mean of its divisors is an integer number (1017085359780).

Almost surely, 2^{51886940965314} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51886940965314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65093463025920).

51886940965314 is an abundant number, since it is smaller than the sum of its proper divisors (78299985086526).

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

51886940965314 is a wasteful number, since it uses less digits than its factorization.

51886940965314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763164.

The product of its (nonzero) digits is 223948800, while the sum is 69.

The spelling of 51886940965314 in words is "fifty-one trillion, eight hundred eighty-six billion, nine hundred forty million, nine hundred sixty-five thousand, three hundred fourteen".