51556522565514 has 16 divisors (see below), whose sum is σ = 103567287623328. Its totient is φ = 17109800439792.

The previous prime is 51556522565501. The next prime is 51556522565531. The reversal of 51556522565514 is 41556522565515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18926769037 + ... + 18926771760.

It is an arithmetic number, because the mean of its divisors is an integer number (6472955476458).

Almost surely, 2^{51556522565514} is an apocalyptic number.

51556522565514 is an abundant number, since it is smaller than the sum of its proper divisors (52010765057814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51556522565514 is a wasteful number, since it uses less digits than its factorization.

51556522565514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37853541029.

The product of its digits is 45000000, while the sum is 57.

Subtracting from 51556522565514 its reverse (41556522565515), we obtain a palindrome (9999999999999).

The spelling of 51556522565514 in words is "fifty-one trillion, five hundred fifty-six billion, five hundred twenty-two million, five hundred sixty-five thousand, five hundred fourteen".