665745150455 has 32 divisors (see below), whose sum is σ = 1048446236160. Its totient is φ = 393167329920.

The previous prime is 665745150451. The next prime is 665745150467. The reversal of 665745150455 is 554051547566.

It is not a de Polignac number, because 665745150455 - 2² = 665745150451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665745150397 and 665745150406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665745150451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45498164 + ... + 45512793.

It is an arithmetic number, because the mean of its divisors is an integer number (32763944880).

Almost surely, 2^665745150455 is an apocalyptic number.

665745150455 is a deficient number, since it is larger than the sum of its proper divisors (382701085705).

665745150455 is a wasteful number, since it uses less digits than its factorization.

665745150455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91010999.

The product of its (nonzero) digits is 12600000, while the sum is 53.

The spelling of 665745150455 in words is "six hundred sixty-five billion, seven hundred forty-five million, one hundred fifty thousand, four hundred fifty-five".