51316555561315 has 16 divisors (see below), whose sum is σ = 67180742480736. Its totient is φ = 37319627923200.

The previous prime is 51316555561259. The next prime is 51316555561319.

51316555561315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51316555561315 - 2¹⁷ = 51316555430243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51316555561319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17413752 + ... + 20146261.

It is an arithmetic number, because the mean of its divisors is an integer number (4198796405046).

Almost surely, 2^{51316555561315} is an apocalyptic number.

51316555561315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51316555561315 is a deficient number, since it is larger than the sum of its proper divisors (15864186919421).

51316555561315 is a wasteful number, since it uses less digits than its factorization.

51316555561315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37584870.

The product of its digits is 5062500, while the sum is 52.

The spelling of 51316555561315 in words is "fifty-one trillion, three hundred sixteen billion, five hundred fifty-five million, five hundred sixty-one thousand, three hundred fifteen".