51320434504 has 16 divisors (see below), whose sum is σ = 97385163120. Its totient is φ = 25351057680.

The previous prime is 51320434471. The next prime is 51320434537. The reversal of 51320434504 is 40543402315.

It is an interprime number because it is at equal distance from previous prime (51320434471) and next prime (51320434537).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38644242 + ... + 38645569.

It is an arithmetic number, because the mean of its divisors is an integer number (6086572695).

Almost surely, 2^51320434504 is an apocalyptic number.

It is an amenable number.

51320434504 is a deficient number, since it is larger than the sum of its proper divisors (46064728616).

51320434504 is a wasteful number, since it uses less digits than its factorization.

51320434504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77289900 (or 77289896 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 51320434504 its reverse (40543402315), we get a palindrome (91863836819).

The spelling of 51320434504 in words is "fifty-one billion, three hundred twenty million, four hundred thirty-four thousand, five hundred four".