253178864123 has 48 divisors (see below), whose sum is σ = 280491509760. Its totient is φ = 228144470400.

The previous prime is 253178864093. The next prime is 253178864129. The reversal of 253178864123 is 321468871352.

It is not a de Polignac number, because 253178864123 - 2²⁰ = 253177815547 is a prime.

It is a super-2 number, since 2×253178864123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253178864129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401234018 + ... + 401234648.

It is an arithmetic number, because the mean of its divisors is an integer number (5843573120).

Almost surely, 2^253178864123 is an apocalyptic number.

253178864123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253178864123 is a deficient number, since it is larger than the sum of its proper divisors (27312645637).

253178864123 is a wasteful number, since it uses less digits than its factorization.

253178864123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1297 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The spelling of 253178864123 in words is "two hundred fifty-three billion, one hundred seventy-eight million, eight hundred sixty-four thousand, one hundred twenty-three".