51516005506 has 16 divisors (see below), whose sum is σ = 88325867520. Its totient is φ = 22075109280.

The previous prime is 51516005503. The next prime is 51516005533. The reversal of 51516005506 is 60550061515.

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 7 ways as a sum of consecutive naturals, for example, 162835 + ... + 359926.

It is an arithmetic number, because the mean of its divisors is an integer number (5520366720).

Almost surely, 2^51516005506 is an apocalyptic number.

51516005506 is a deficient number, since it is larger than the sum of its proper divisors (36809862014).

51516005506 is a wasteful number, since it uses less digits than its factorization.

51516005506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529809.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51516005506 in words is "fifty-one billion, five hundred sixteen million, five thousand, five hundred six".