51751041615 has 128 divisors (see below), whose sum is σ = 113344358400. Its totient is φ = 21816345600.

The previous prime is 51751041613. The next prime is 51751041619. The reversal of 51751041615 is 51614015715.

It is not a de Polignac number, because 51751041615 - 2¹ = 51751041613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51751041615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51751041613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22124116 + ... + 22126454.

It is an arithmetic number, because the mean of its divisors is an integer number (885502800).

Almost surely, 2^51751041615 is an apocalyptic number.

51751041615 is an abundant number, since it is smaller than the sum of its proper divisors (61593316785).

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

51751041615 is a wasteful number, since it uses less digits than its factorization.

51751041615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174 (or 4168 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

The spelling of 51751041615 in words is "fifty-one billion, seven hundred fifty-one million, forty-one thousand, six hundred fifteen".