641623315885 has 8 divisors (see below), whose sum is σ = 771018842880. Its totient is φ = 512584743504.

The previous prime is 641623315859. The next prime is 641623315891. The reversal of 641623315885 is 588513326146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641623315885 - 2²⁷ = 641489098157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89234697 + ... + 89241886.

It is an arithmetic number, because the mean of its divisors is an integer number (96377355360).

Almost surely, 2^641623315885 is an apocalyptic number.

It is an amenable number.

641623315885 is a deficient number, since it is larger than the sum of its proper divisors (129395526995).

641623315885 is a wasteful number, since it uses less digits than its factorization.

641623315885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178477307.

The product of its digits is 4147200, while the sum is 52.

The spelling of 641623315885 in words is "six hundred forty-one billion, six hundred twenty-three million, three hundred fifteen thousand, eight hundred eighty-five".