51536434430 has 32 divisors (see below), whose sum is σ = 100031500800. Its totient is φ = 19004055552.

The previous prime is 51536434421. The next prime is 51536434447. The reversal of 51536434430 is 3443463515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157790 + ... + 357729.

It is an arithmetic number, because the mean of its divisors is an integer number (3125984400).

Almost surely, 2^51536434430 is an apocalyptic number.

51536434430 is a deficient number, since it is larger than the sum of its proper divisors (48495066370).

51536434430 is a wasteful number, since it uses less digits than its factorization.

51536434430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516308.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 51536434430 its reverse (3443463515), we get a palindrome (54979897945).

The spelling of 51536434430 in words is "fifty-one billion, five hundred thirty-six million, four hundred thirty-four thousand, four hundred thirty".