641876238786 has 8 divisors (see below), whose sum is σ = 1283752477584. Its totient is φ = 213958746260.

The previous prime is 641876238769. The next prime is 641876238791. The reversal of 641876238786 is 687832678146.

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

641876238786 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53489686560 + ... + 53489686571.

It is an arithmetic number, because the mean of its divisors is an integer number (160469059698).

Almost surely, 2^641876238786 is an apocalyptic number.

641876238786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641876238786 is a wasteful number, since it uses less digits than its factorization.

641876238786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106979373136.

The product of its digits is 130056192, while the sum is 66.

The spelling of 641876238786 in words is "six hundred forty-one billion, eight hundred seventy-six million, two hundred thirty-eight thousand, seven hundred eighty-six".