51500345015 has 16 divisors (see below), whose sum is σ = 70634979840. Its totient is φ = 35311554720.

The previous prime is 51500345009. The next prime is 51500345021. The reversal of 51500345015 is 51054300515.

It is an interprime number because it is at equal distance from previous prime (51500345009) and next prime (51500345021).

It is not a de Polignac number, because 51500345015 - 2²⁴ = 51483567799 is a prime.

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, 411710 + ... + 522020.

It is an arithmetic number, because the mean of its divisors is an integer number (4414686240).

Almost surely, 2^51500345015 is an apocalyptic number.

51500345015 is a deficient number, since it is larger than the sum of its proper divisors (19134634825).

51500345015 is a wasteful number, since it uses less digits than its factorization.

51500345015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123662.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 51500345015 in words is "fifty-one billion, five hundred million, three hundred forty-five thousand, fifteen".