51116552442 has 32 divisors (see below), whose sum is σ = 120274243200. Its totient is φ = 16036565184.

The previous prime is 51116552441. The next prime is 51116552467. The reversal of 51116552442 is 24425561115.

51116552442 is a `hidden beast` number, since 5 + 1 + 1 + 165 + 52 + 442 = 666.

It is a super-2 number, since 2×51116552442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51116552397 and 51116552406.

It is not an unprimeable number, because it can be changed into a prime (51116552441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27840342 + ... + 27842177.

It is an arithmetic number, because the mean of its divisors is an integer number (3758570100).

Almost surely, 2^51116552442 is an apocalyptic number.

51116552442 is an abundant number, since it is smaller than the sum of its proper divisors (69157690758).

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

51116552442 is a wasteful number, since it uses less digits than its factorization.

51116552442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55682547 (or 55682541 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 51116552442 in words is "fifty-one billion, one hundred sixteen million, five hundred fifty-two thousand, four hundred forty-two".