51512540343 has 32 divisors (see below), whose sum is σ = 76902642432. Its totient is φ = 30399609600.

The previous prime is 51512540333. The next prime is 51512540393. The reversal of 51512540343 is 34304521515.

It is not a de Polignac number, because 51512540343 - 2⁹ = 51512539831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512540323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671221 + ... + 744017.

It is an arithmetic number, because the mean of its divisors is an integer number (2403207576).

Almost surely, 2^51512540343 is an apocalyptic number.

51512540343 is a deficient number, since it is larger than the sum of its proper divisors (25390102089).

51512540343 is a wasteful number, since it uses less digits than its factorization.

51512540343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73375.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 51512540343 in words is "fifty-one billion, five hundred twelve million, five hundred forty thousand, three hundred forty-three".