51516005505 has 16 divisors (see below), whose sum is σ = 87274174464. Its totient is φ = 25859014400.

The previous prime is 51516005503. The next prime is 51516005533. The reversal of 51516005505 is 50550061515.

It is not a de Polignac number, because 51516005505 - 2¹ = 51516005503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51516005503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101011521 + ... + 101012030.

It is an arithmetic number, because the mean of its divisors is an integer number (5454635904).

Almost surely, 2^51516005505 is an apocalyptic number.

It is an amenable number.

51516005505 is a deficient number, since it is larger than the sum of its proper divisors (35758168959).

51516005505 is a wasteful number, since it uses less digits than its factorization.

51516005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202023576.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 51516005505 in words is "fifty-one billion, five hundred sixteen million, five thousand, five hundred five".