641642709594 has 16 divisors (see below), whose sum is σ = 1350826757280. Its totient is φ = 202624013520.

The previous prime is 641642709577. The next prime is 641642709623. The reversal of 641642709594 is 495907246146.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 2814222297 + ... + 2814222524.

It is an arithmetic number, because the mean of its divisors is an integer number (84426672330).

Almost surely, 2^641642709594 is an apocalyptic number.

641642709594 is an abundant number, since it is smaller than the sum of its proper divisors (709184047686).

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

641642709594 is a wasteful number, since it uses less digits than its factorization.

641642709594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628444845.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 641642709594 in words is "six hundred forty-one billion, six hundred forty-two million, seven hundred nine thousand, five hundred ninety-four".