253891705171 has 16 divisors (see below), whose sum is σ = 275318120448. Its totient is φ = 232737156000.

The previous prime is 253891705153. The next prime is 253891705211. The reversal of 253891705171 is 171507198352.

It is a cyclic number.

It is not a de Polignac number, because 253891705171 - 2²⁷ = 253757487443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253891700171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6905166 + ... + 6941836.

It is an arithmetic number, because the mean of its divisors is an integer number (17207382528).

Almost surely, 2^253891705171 is an apocalyptic number.

253891705171 is a deficient number, since it is larger than the sum of its proper divisors (21426415277).

253891705171 is a wasteful number, since it uses less digits than its factorization.

253891705171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40362.

The product of its (nonzero) digits is 529200, while the sum is 49.

The spelling of 253891705171 in words is "two hundred fifty-three billion, eight hundred ninety-one million, seven hundred five thousand, one hundred seventy-one".