655436174961 has 4 divisors (see below), whose sum is σ = 873914899952. Its totient is φ = 436957449972.

The previous prime is 655436174933. The next prime is 655436175041. The reversal of 655436174961 is 169471634556.

It is a happy number.

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 655436174961 - 2¹⁹ = 655435650673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655436174761) 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, 109239362491 + ... + 109239362496.

It is an arithmetic number, because the mean of its divisors is an integer number (218478724988).

Almost surely, 2^655436174961 is an apocalyptic number.

It is an amenable number.

655436174961 is a deficient number, since it is larger than the sum of its proper divisors (218478724991).

655436174961 is a wasteful number, since it uses less digits than its factorization.

655436174961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218478724990.

The product of its digits is 16329600, while the sum is 57.

The spelling of 655436174961 in words is "six hundred fifty-five billion, four hundred thirty-six million, one hundred seventy-four thousand, nine hundred sixty-one".