641995129810 has 16 divisors (see below), whose sum is σ = 1156091314752. Its totient is φ = 256686922800.

The previous prime is 641995129807. The next prime is 641995129829. The reversal of 641995129810 is 18921599146.

It is a happy number.

641995129810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641995129810² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13866876 + ... + 13913095.

It is an arithmetic number, because the mean of its divisors is an integer number (72255707172).

Almost surely, 2^641995129810 is an apocalyptic number.

641995129810 is a deficient number, since it is larger than the sum of its proper divisors (514096184942).

641995129810 is a wasteful number, since it uses less digits than its factorization.

641995129810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27782289.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 641995129810 in words is "six hundred forty-one billion, nine hundred ninety-five million, one hundred twenty-nine thousand, eight hundred ten".