7501664655 has 12 divisors (see below), whose sum is σ = 13002885480. Its totient is φ = 4000887792.

The previous prime is 7501664627. The next prime is 7501664693. The reversal of 7501664655 is 5564661057.

It is not a de Polignac number, because 7501664655 - 2⁵ = 7501664623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 166703659 = 7501664655 / (7 + 5 + 0 + 1 + 6 + 6 + 4 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 7501664655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83351785 + ... + 83351874.

It is an arithmetic number, because the mean of its divisors is an integer number (1083573790).

Almost surely, 2^7501664655 is an apocalyptic number.

7501664655 is a deficient number, since it is larger than the sum of its proper divisors (5501220825).

7501664655 is a wasteful number, since it uses less digits than its factorization.

7501664655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166703670 (or 166703667 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 7501664655 is about 86612.1507353327. The cubic root of 7501664655 is about 1957.5786299600.

The spelling of 7501664655 in words is "seven billion, five hundred one million, six hundred sixty-four thousand, six hundred fifty-five".