51002655765 has 16 divisors (see below), whose sum is σ = 81611429568. Its totient is φ = 27199022976.

The previous prime is 51002655763. The next prime is 51002655773. The reversal of 51002655765 is 56755620015.

It is a happy number.

It is not a de Polignac number, because 51002655765 - 2¹ = 51002655763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51002655763) 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, 33822 + ... + 321168.

It is an arithmetic number, because the mean of its divisors is an integer number (5100714348).

Almost surely, 2^51002655765 is an apocalyptic number.

It is an amenable number.

51002655765 is a deficient number, since it is larger than the sum of its proper divisors (30608773803).

51002655765 is a wasteful number, since it uses less digits than its factorization.

51002655765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299188.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 51002655765 in words is "fifty-one billion, two million, six hundred fifty-five thousand, seven hundred sixty-five".