51000550611605 has 16 divisors (see below), whose sum is σ = 70039820847360. Its totient is φ = 34923701843712.

The previous prime is 51000550611559. The next prime is 51000550611617. The reversal of 51000550611605 is 50611605500015.

It is a cyclic number.

It is not a de Polignac number, because 51000550611605 - 2²⁶ = 51000483502741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

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, 1002146900 + ... + 1002197789.

It is an arithmetic number, because the mean of its divisors is an integer number (4377488802960).

Almost surely, 2^{51000550611605} is an apocalyptic number.

It is an amenable number.

51000550611605 is a deficient number, since it is larger than the sum of its proper divisors (19039270235755).

51000550611605 is a wasteful number, since it uses less digits than its factorization.

51000550611605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004345428.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51000550611605 in words is "fifty-one trillion, five hundred fifty million, six hundred eleven thousand, six hundred five".