275439390653 has 4 divisors (see below), whose sum is σ = 314787875040. Its totient is φ = 236090906268.

The previous prime is 275439390641. The next prime is 275439390673. The reversal of 275439390653 is 356093934572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 275439390653 - 2²² = 275435196349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275439390673) 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, 19674242183 + ... + 19674242196.

It is an arithmetic number, because the mean of its divisors is an integer number (78696968760).

Almost surely, 2^275439390653 is an apocalyptic number.

It is an amenable number.

275439390653 is a deficient number, since it is larger than the sum of its proper divisors (39348484387).

275439390653 is an equidigital number, since it uses as much as digits as its factorization.

275439390653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39348484386.

The product of its (nonzero) digits is 18370800, while the sum is 56.

The spelling of 275439390653 in words is "two hundred seventy-five billion, four hundred thirty-nine million, three hundred ninety thousand, six hundred fifty-three".