665242330054151 has 4 divisors (see below), whose sum is σ = 665287076307672. Its totient is φ = 665197583800632.

The previous prime is 665242330054111. The next prime is 665242330054193. The reversal of 665242330054151 is 151450033242566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665242330054151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665242330054096 and 665242330054105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665242330054111) 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, 22373104460 + ... + 22373134193.

It is an arithmetic number, because the mean of its divisors is an integer number (166321769076918).

Almost surely, 2^{665242330054151} is an apocalyptic number.

665242330054151 is a deficient number, since it is larger than the sum of its proper divisors (44746253521).

665242330054151 is a wasteful number, since it uses less digits than its factorization.

665242330054151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44746253520.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 665242330054151 in words is "six hundred sixty-five trillion, two hundred forty-two billion, three hundred thirty million, fifty-four thousand, one hundred fifty-one".