641100154155 has 16 divisors (see below), whose sum is σ = 1027108175904. Its totient is φ = 341470772480.

The previous prime is 641100154147. The next prime is 641100154159. The reversal of 641100154155 is 551451001146.

It is not a de Polignac number, because 641100154155 - 2³ = 641100154147 is a prime.

It is a super-2 number, since 2×641100154155² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641100154159) 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, 28070064 + ... + 28092893.

It is an arithmetic number, because the mean of its divisors is an integer number (64194260994).

Almost surely, 2^641100154155 is an apocalyptic number.

641100154155 is a deficient number, since it is larger than the sum of its proper divisors (386008021749).

641100154155 is a wasteful number, since it uses less digits than its factorization.

641100154155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56163726.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 641100154155 in words is "six hundred forty-one billion, one hundred million, one hundred fifty-four thousand, one hundred fifty-five".