51582142536 has 16 divisors (see below), whose sum is σ = 128955356400. Its totient is φ = 17194047504.

The previous prime is 51582142529. The next prime is 51582142537. The reversal of 51582142536 is 63524128515.

It is a super-2 number, since 2×51582142536² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51582142537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074627946 + ... + 1074627993.

It is an arithmetic number, because the mean of its divisors is an integer number (8059709775).

Almost surely, 2^51582142536 is an apocalyptic number.

It is an amenable number.

51582142536 is an abundant number, since it is smaller than the sum of its proper divisors (77373213864).

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

51582142536 is a wasteful number, since it uses less digits than its factorization.

51582142536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149255948 (or 2149255944 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 51582142536 in words is "fifty-one billion, five hundred eighty-two million, one hundred forty-two thousand, five hundred thirty-six".