51440531022 has 48 divisors (see below), whose sum is σ = 113082737040. Its totient is φ = 16897389696.

The previous prime is 51440531003. The next prime is 51440531053. The reversal of 51440531022 is 22013504415.

51440531022 is a `hidden beast` number, since 514 + 40 + 5 + 3 + 102 + 2 = 666.

It is a super-2 number, since 2×51440531022² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 549754 + ... + 636482.

It is an arithmetic number, because the mean of its divisors is an integer number (2355890355).

Almost surely, 2^51440531022 is an apocalyptic number.

51440531022 is an abundant number, since it is smaller than the sum of its proper divisors (61642206018).

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

51440531022 is a wasteful number, since it uses less digits than its factorization.

51440531022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87217 (or 87214 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 51440531022 in words is "fifty-one billion, four hundred forty million, five hundred thirty-one thousand, twenty-two".