306336645323661 has 4 divisors (see below), whose sum is σ = 408448860431552. Its totient is φ = 204224430215772.

The previous prime is 306336645323629. The next prime is 306336645323707. The reversal of 306336645323661 is 166323546633603.

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 306336645323661 - 2⁵ = 306336645323629 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 (306336645323461) 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, 51056107553941 + ... + 51056107553946.

It is an arithmetic number, because the mean of its divisors is an integer number (102112215107888).

Almost surely, 2^{306336645323661} is an apocalyptic number.

It is an amenable number.

306336645323661 is a deficient number, since it is larger than the sum of its proper divisors (102112215107891).

306336645323661 is a wasteful number, since it uses less digits than its factorization.

306336645323661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102112215107890.

The product of its (nonzero) digits is 75582720, while the sum is 57.

The spelling of 306336645323661 in words is "three hundred six trillion, three hundred thirty-six billion, six hundred forty-five million, three hundred twenty-three thousand, six hundred sixty-one".