51010505555505 has 16 divisors (see below), whose sum is σ = 81714087584640. Its totient is φ = 27173176731008.

The previous prime is 51010505555437. The next prime is 51010505555521. The reversal of 51010505555505 is 50555550501015.

It is a cyclic number.

It is not a de Polignac number, because 51010505555505 - 2¹⁵ = 51010505522737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2026626492 + ... + 2026651661.

It is an arithmetic number, because the mean of its divisors is an integer number (5107130474040).

Almost surely, 2^{51010505555505} is an apocalyptic number.

It is an amenable number.

51010505555505 is a deficient number, since it is larger than the sum of its proper divisors (30703582029135).

51010505555505 is a wasteful number, since it uses less digits than its factorization.

51010505555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053279000.

The product of its (nonzero) digits is 390625, while the sum is 42.

The spelling of 51010505555505 in words is "fifty-one trillion, ten billion, five hundred five million, five hundred fifty-five thousand, five hundred five".