45488737665 has 72 divisors (see below), whose sum is σ = 91762505640. Its totient is φ = 20785250304.

The previous prime is 45488737643. The next prime is 45488737739. The reversal of 45488737665 is 56673788454.

45488737665 is a `hidden beast` number, since 4 + 548 + 87 + 3 + 7 + 6 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2021491521 + 43467246144 = 44961^2 + 208488^2 .

It is not a de Polignac number, because 45488737665 - 2⁵ = 45488737633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7337347 + ... + 7343543.

It is an arithmetic number, because the mean of its divisors is an integer number (1274479245).

Almost surely, 2^45488737665 is an apocalyptic number.

45488737665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45488737665 is an abundant number, since it is smaller than the sum of its proper divisors (46273767975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45488737665 is a wasteful number, since it uses less digits than its factorization.

45488737665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9551 (or 9541 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 63.

The spelling of 45488737665 in words is "forty-five billion, four hundred eighty-eight million, seven hundred thirty-seven thousand, six hundred sixty-five".