6657817045 has 16 divisors (see below), whose sum is σ = 8719570368. Its totient is φ = 4839891840.

The previous prime is 6657817027. The next prime is 6657817057. The reversal of 6657817045 is 5407187566.

It is a happy number.

It is not a de Polignac number, because 6657817045 - 2⁹ = 6657816533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6657817045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103297 + ... + 154873.

It is an arithmetic number, because the mean of its divisors is an integer number (544973148).

Almost surely, 2^6657817045 is an apocalyptic number.

It is an amenable number.

6657817045 is a deficient number, since it is larger than the sum of its proper divisors (2061753323).

6657817045 is a wasteful number, since it uses less digits than its factorization.

6657817045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53940.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 6657817045 is about 81595.4474526612. The cubic root of 6657817045 is about 1881.2389077171.

The spelling of 6657817045 in words is "six billion, six hundred fifty-seven million, eight hundred seventeen thousand, forty-five".