253166408901 has 80 divisors (see below), whose sum is σ = 458023991040. Its totient is φ = 136270874880.

The previous prime is 253166408879. The next prime is 253166408909. The reversal of 253166408901 is 109804661352.

It is not a de Polignac number, because 253166408901 - 2⁶ = 253166408837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253166408909) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 486400 + ... + 861926.

It is an arithmetic number, because the mean of its divisors is an integer number (5725299888).

Almost surely, 2^253166408901 is an apocalyptic number.

253166408901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

253166408901 is a deficient number, since it is larger than the sum of its proper divisors (204857582139).

253166408901 is a wasteful number, since it uses less digits than its factorization.

253166408901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375616 (or 375607 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 253166408901 in words is "two hundred fifty-three billion, one hundred sixty-six million, four hundred eight thousand, nine hundred one".