51164233142 has 24 divisors (see below), whose sum is σ = 85545721296. Its totient is φ = 22928906000.

The previous prime is 51164233139. The next prime is 51164233193. The reversal of 51164233142 is 24133246115.

It is a junction number, because it is equal to n+sod(n) for n = 51164233099 and 51164233108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471709 + ... + 1506072.

It is an arithmetic number, because the mean of its divisors is an integer number (3564405054).

Almost surely, 2^51164233142 is an apocalyptic number.

51164233142 is a deficient number, since it is larger than the sum of its proper divisors (34381488154).

51164233142 is a wasteful number, since it uses less digits than its factorization.

51164233142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977876 (or 2977865 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 51164233142 its reverse (24133246115), we get a palindrome (75297479257).

The spelling of 51164233142 in words is "fifty-one billion, one hundred sixty-four million, two hundred thirty-three thousand, one hundred forty-two".