51516016615090 has 8 divisors (see below), whose sum is σ = 92728829907180. Its totient is φ = 20606406646032.

The previous prime is 51516016615069. The next prime is 51516016615099. The reversal of 51516016615090 is 9051661061515.

It can be written as a sum of positive squares in 2 ways, for example, as 51181161118201 + 334855496889 = 7154101^2 + 578667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51516016615090.

It is not an unprimeable number, because it can be changed into a prime (51516016615099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575800830745 + ... + 2575800830764.

Almost surely, 2^{51516016615090} is an apocalyptic number.

51516016615090 is a deficient number, since it is larger than the sum of its proper divisors (41212813292090).

51516016615090 is a wasteful number, since it uses less digits than its factorization.

51516016615090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151601661516.

The product of its (nonzero) digits is 243000, while the sum is 46.

The spelling of 51516016615090 in words is "fifty-one trillion, five hundred sixteen billion, sixteen million, six hundred fifteen thousand, ninety".