253354553305445 has 4 divisors (see below), whose sum is σ = 304025463966540. Its totient is φ = 202683642644352.

The previous prime is 253354553305393. The next prime is 253354553305489. The reversal of 253354553305445 is 544503355453352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140931135159364 + 112423418146081 = 11871442^2 + 10602991^2 .

It is a cyclic number.

It is not a de Polignac number, because 253354553305445 - 2²⁴ = 253354536528229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25335455330540 + ... + 25335455330549.

It is an arithmetic number, because the mean of its divisors is an integer number (76006365991635).

Almost surely, 2^{253354553305445} is an apocalyptic number.

It is an amenable number.

253354553305445 is a deficient number, since it is larger than the sum of its proper divisors (50670910661095).

253354553305445 is an equidigital number, since it uses as much as digits as its factorization.

253354553305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50670910661094.

The product of its (nonzero) digits is 162000000, while the sum is 56.

The spelling of 253354553305445 in words is "two hundred fifty-three trillion, three hundred fifty-four billion, five hundred fifty-three million, three hundred five thousand, four hundred forty-five".