51610431243 has 48 divisors (see below), whose sum is σ = 80460003456. Its totient is φ = 29340622080.

The previous prime is 51610431227. The next prime is 51610431281. The reversal of 51610431243 is 34213401615.

It is not a de Polignac number, because 51610431243 - 2⁴ = 51610431227 is a prime.

It is a super-2 number, since 2×51610431243² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51610431243.

It is not an unprimeable number, because it can be changed into a prime (51610431283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33231955 + ... + 33233507.

It is an arithmetic number, because the mean of its divisors is an integer number (1676250072).

Almost surely, 2^51610431243 is an apocalyptic number.

51610431243 is a deficient number, since it is larger than the sum of its proper divisors (28849572213).

51610431243 is a wasteful number, since it uses less digits than its factorization.

51610431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 51610431243 its reverse (34213401615), we get a palindrome (85823832858).

The spelling of 51610431243 in words is "fifty-one billion, six hundred ten million, four hundred thirty-one thousand, two hundred forty-three".