6657115553 has 16 divisors (see below), whose sum is σ = 7623659520. Its totient is φ = 5757416400.

The previous prime is 6657115547. The next prime is 6657115567. The reversal of 6657115553 is 3555117566.

It is a cyclic number.

It is not a de Polignac number, because 6657115553 - 2²⁴ = 6640338337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6657115523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145325 + ... + 185562.

It is an arithmetic number, because the mean of its divisors is an integer number (476478720).

Almost surely, 2^6657115553 is an apocalyptic number.

It is an amenable number.

6657115553 is a deficient number, since it is larger than the sum of its proper divisors (966543967).

6657115553 is a wasteful number, since it uses less digits than its factorization.

6657115553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330988.

The product of its digits is 472500, while the sum is 44.

The square root of 6657115553 is about 81591.1487417600. The cubic root of 6657115553 is about 1881.1728339882.

The spelling of 6657115553 in words is "six billion, six hundred fifty-seven million, one hundred fifteen thousand, five hundred fifty-three".