253117311663 has 8 divisors (see below), whose sum is σ = 337658755248. Its totient is φ = 168660371264.

The previous prime is 253117311613. The next prime is 253117311677. The reversal of 253117311663 is 366113711352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253117311663 - 2⁸ = 253117311407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253117311613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21118806 + ... + 21130787.

It is an arithmetic number, because the mean of its divisors is an integer number (42207344406).

Almost surely, 2^253117311663 is an apocalyptic number.

253117311663 is a deficient number, since it is larger than the sum of its proper divisors (84541443585).

253117311663 is a wasteful number, since it uses less digits than its factorization.

253117311663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42251593.

The product of its digits is 68040, while the sum is 39.

The spelling of 253117311663 in words is "two hundred fifty-three billion, one hundred seventeen million, three hundred eleven thousand, six hundred sixty-three".