51000650655 has 16 divisors (see below), whose sum is σ = 81806594784. Its totient is φ = 27131829120.

The previous prime is 51000650653. The next prime is 51000650663. The reversal of 51000650655 is 55605600015.

It is not a de Polignac number, because 51000650655 - 2¹ = 51000650653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000650653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4276216 + ... + 4288125.

It is an arithmetic number, because the mean of its divisors is an integer number (5112912174).

Almost surely, 2^51000650655 is an apocalyptic number.

51000650655 is a deficient number, since it is larger than the sum of its proper divisors (30805944129).

51000650655 is a wasteful number, since it uses less digits than its factorization.

51000650655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8564746.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 51000650655 in words is "fifty-one billion, six hundred fifty thousand, six hundred fifty-five".