51555677655515 has 16 divisors (see below), whose sum is σ = 68159297343456. Its totient is φ = 37123800288000.

The previous prime is 51555677655479. The next prime is 51555677655551.

51555677655515 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (51555677655479) and next prime (51555677655551).

It is not a de Polignac number, because 51555677655515 - 2⁸ = 51555677655259 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4640469482 + ... + 4640480591.

It is an arithmetic number, because the mean of its divisors is an integer number (4259956083966).

Almost surely, 2^{51555677655515} is an apocalyptic number.

51555677655515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51555677655515 is a deficient number, since it is larger than the sum of its proper divisors (16603619687941).

51555677655515 is a wasteful number, since it uses less digits than its factorization.

51555677655515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9280950190.

The product of its digits is 689062500, while the sum is 68.

The spelling of 51555677655515 in words is "fifty-one trillion, five hundred fifty-five billion, six hundred seventy-seven million, six hundred fifty-five thousand, five hundred fifteen".