6921075855141 has 64 divisors (see below), whose sum is σ = 12082883420160. Its totient is φ = 3832679592000.

The previous prime is 6921075855107. The next prime is 6921075855157. The reversal of 6921075855141 is 1415585701296.

6921075855141 is a `hidden beast` number, since 6 + 9 + 2 + 1 + 0 + 7 + 585 + 51 + 4 + 1 = 666.

It is not a de Polignac number, because 6921075855141 - 2³⁵ = 6886716116773 is a prime.

It is a super-2 number, since 2×6921075855141² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921075855041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216301 + ... + 3726786.

It is an arithmetic number, because the mean of its divisors is an integer number (188795053440).

Almost surely, 2^{6921075855141} is an apocalyptic number.

It is an amenable number.

6921075855141 is a deficient number, since it is larger than the sum of its proper divisors (5161807565019).

6921075855141 is a wasteful number, since it uses less digits than its factorization.

6921075855141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943391 (or 3943385 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 54.

The spelling of 6921075855141 in words is "six trillion, nine hundred twenty-one billion, seventy-five million, eight hundred fifty-five thousand, one hundred forty-one".