51516545534 has 16 divisors (see below), whose sum is σ = 77726428416. Its totient is φ = 25608144600.

The previous prime is 51516545497. The next prime is 51516545537. The reversal of 51516545534 is 43554561515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516545537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151349 + ... + 354879.

It is an arithmetic number, because the mean of its divisors is an integer number (4857901776).

Almost surely, 2^51516545534 is an apocalyptic number.

51516545534 is a deficient number, since it is larger than the sum of its proper divisors (26209882882).

51516545534 is a wasteful number, since it uses less digits than its factorization.

51516545534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204271.

The product of its digits is 900000, while the sum is 44.

The spelling of 51516545534 in words is "fifty-one billion, five hundred sixteen million, five hundred forty-five thousand, five hundred thirty-four".