51555142915375 has 32 divisors (see below), whose sum is σ = 70315999041600. Its totient is φ = 37427333488000.

The previous prime is 51555142915363. The next prime is 51555142915379. The reversal of 51555142915375 is 57351924155515.

It is not a de Polignac number, because 51555142915375 - 2⁷ = 51555142915247 is a prime.

It is a super-2 number, since 2×51555142915375² (a number of 28 digits) contains 22 as substring.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32891800 + ... + 34423549.

It is an arithmetic number, because the mean of its divisors is an integer number (2197374970050).

Almost surely, 2^{51555142915375} is an apocalyptic number.

51555142915375 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51555142915375 is a deficient number, since it is larger than the sum of its proper divisors (18760856126225).

51555142915375 is a wasteful number, since it uses less digits than its factorization.

51555142915375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67315932 (or 67315922 counting only the distinct ones).

The product of its digits is 23625000, while the sum is 58.

The spelling of 51555142915375 in words is "fifty-one trillion, five hundred fifty-five billion, one hundred forty-two million, nine hundred fifteen thousand, three hundred seventy-five".