253691928705 has 8 divisors (see below), whose sum is σ = 405907085952. Its totient is φ = 135302361968.

The previous prime is 253691928691. The next prime is 253691928709. The reversal of 253691928705 is 507829196352.

It is a happy number.

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 253691928705 - 2⁷ = 253691928577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253691928709) 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, 8456397609 + ... + 8456397638.

It is an arithmetic number, because the mean of its divisors is an integer number (50738385744).

Almost surely, 2^253691928705 is an apocalyptic number.

It is an amenable number.

253691928705 is a deficient number, since it is larger than the sum of its proper divisors (152215157247).

253691928705 is a wasteful number, since it uses less digits than its factorization.

253691928705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16912795255.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 253691928705 in words is "two hundred fifty-three billion, six hundred ninety-one million, nine hundred twenty-eight thousand, seven hundred five".