641602040022 has 12 divisors (see below), whose sum is σ = 1390137753420. Its totient is φ = 213867346668.

The previous prime is 641602039943. The next prime is 641602040099. The reversal of 641602040022 is 220040206146.

641602040022 is a `hidden beast` number, since 64 + 160 + 20 + 400 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17822278872 + ... + 17822278907.

It is an arithmetic number, because the mean of its divisors is an integer number (115844812785).

Almost surely, 2^641602040022 is an apocalyptic number.

641602040022 is an abundant number, since it is smaller than the sum of its proper divisors (748535713398).

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

641602040022 is a wasteful number, since it uses less digits than its factorization.

641602040022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35644557787 (or 35644557784 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 641602040022 its reverse (220040206146), we get a palindrome (861642246168).

The spelling of 641602040022 in words is "six hundred forty-one billion, six hundred two million, forty thousand, twenty-two".