253408080091 has 4 divisors (see below), whose sum is σ = 253410551784. Its totient is φ = 253405608400.

The previous prime is 253408080061. The next prime is 253408080097. The reversal of 253408080091 is 190080804352.

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 253408080091 - 2⁵ = 253408080059 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253408080097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075090 + ... + 1289431.

It is an arithmetic number, because the mean of its divisors is an integer number (63352637946).

Almost surely, 2^253408080091 is an apocalyptic number.

253408080091 is a deficient number, since it is larger than the sum of its proper divisors (2471693).

253408080091 is a wasteful number, since it uses less digits than its factorization.

253408080091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471692.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 253408080091 in words is "two hundred fifty-three billion, four hundred eight million, eighty thousand, ninety-one".