6658128379 has 16 divisors (see below), whose sum is σ = 7777139200. Its totient is φ = 5697737640.

The previous prime is 6658128287. The next prime is 6658128383. The reversal of 6658128379 is 9738218566.

It is not a de Polignac number, because 6658128379 - 2¹³ = 6658120187 is a prime.

It is a super-2 number, since 2×6658128379² = 88661347022490335282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6658128479) 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, 201052 + ... + 231814.

It is an arithmetic number, because the mean of its divisors is an integer number (486071200).

Almost surely, 2^6658128379 is an apocalyptic number.

6658128379 is a deficient number, since it is larger than the sum of its proper divisors (1119010821).

6658128379 is an equidigital number, since it uses as much as digits as its factorization.

6658128379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31415 (or 31401 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 6658128379 is about 81597.3552206197. The cubic root of 6658128379 is about 1881.2682308671.

The spelling of 6658128379 in words is "six billion, six hundred fifty-eight million, one hundred twenty-eight thousand, three hundred seventy-nine".