51551144115515 has 16 divisors (see below), whose sum is σ = 67505879856096. Its totient is φ = 37480215763200.

The previous prime is 51551144115439. The next prime is 51551144115539.

It is a happy number.

51551144115515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51551144115515 - 2³⁶ = 51482424638779 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, 143887106 + ... + 144244935.

It is an arithmetic number, because the mean of its divisors is an integer number (4219117491006).

Almost surely, 2^{51551144115515} is an apocalyptic number.

51551144115515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51551144115515 is a deficient number, since it is larger than the sum of its proper divisors (15954735740581).

51551144115515 is a wasteful number, since it uses less digits than its factorization.

51551144115515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288135310.

The product of its digits is 250000, while the sum is 44.

The spelling of 51551144115515 in words is "fifty-one trillion, five hundred fifty-one billion, one hundred forty-four million, one hundred fifteen thousand, five hundred fifteen".