253110531646663 has 4 divisors (see below), whose sum is σ = 253111420565568. Its totient is φ = 253109642727760.

The previous prime is 253110531646613. The next prime is 253110531646691. The reversal of 253110531646663 is 366646135011352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253110531646663 - 2³³ = 253101941712071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253110531646663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253110531646613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444032206 + ... + 444601867.

It is an arithmetic number, because the mean of its divisors is an integer number (63277855141392).

Almost surely, 2^{253110531646663} is an apocalyptic number.

253110531646663 is a deficient number, since it is larger than the sum of its proper divisors (888918905).

253110531646663 is an equidigital number, since it uses as much as digits as its factorization.

253110531646663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888918904.

The product of its (nonzero) digits is 6998400, while the sum is 52.

The spelling of 253110531646663 in words is "two hundred fifty-three trillion, one hundred ten billion, five hundred thirty-one million, six hundred forty-six thousand, six hundred sixty-three".