51555142915374 has 64 divisors (see below), whose sum is σ = 121915602109440. Its totient is φ = 14220729868800.

The previous prime is 51555142915363. The next prime is 51555142915379. The reversal of 51555142915374 is 47351924155515.

It is a super-2 number, since 2×51555142915374² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555142915379) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10551574 + ... + 14643974.

It is an arithmetic number, because the mean of its divisors is an integer number (1904931282960).

Almost surely, 2^{51555142915374} is an apocalyptic number.

51555142915374 is an abundant number, since it is smaller than the sum of its proper divisors (70360459194066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51555142915374 is a wasteful number, since it uses less digits than its factorization.

51555142915374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102785.

The product of its digits is 18900000, while the sum is 57.

The spelling of 51555142915374 in words is "fifty-one trillion, five hundred fifty-five billion, one hundred forty-two million, nine hundred fifteen thousand, three hundred seventy-four".