6642144135 has 48 divisors (see below), whose sum is σ = 12567454848. Its totient is φ = 3218443200.

The previous prime is 6642144097. The next prime is 6642144151. The reversal of 6642144135 is 5314412466.

6642144135 is a `hidden beast` number, since 6 + 642 + 1 + 4 + 4 + 1 + 3 + 5 = 666.

6642144135 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6642144135 - 2⁷ = 6642144007 is a prime.

It is a super-2 number, since 2×6642144135² = 88236157420229796450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6642144135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1087440 + ... + 1093530.

It is an arithmetic number, because the mean of its divisors is an integer number (261821976).

Almost surely, 2^6642144135 is an apocalyptic number.

6642144135 is a deficient number, since it is larger than the sum of its proper divisors (5925310713).

6642144135 is a wasteful number, since it uses less digits than its factorization.

6642144135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316 (or 8313 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 6642144135 is about 81499.3505188845. The cubic root of 6642144135 is about 1879.7615639024.

The spelling of 6642144135 in words is "six billion, six hundred forty-two million, one hundred forty-four thousand, one hundred thirty-five".