641423949074 has 8 divisors (see below), whose sum is σ = 970962859020. Its totient is φ = 317769662736.

The previous prime is 641423949031. The next prime is 641423949079. The reversal of 641423949074 is 470949324146.

It can be written as a sum of positive squares in 2 ways, for example, as 619200593449 + 22223355625 = 786893^2 + 149075^2 .

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

It is a super-2 number, since 2×641423949074² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641423949079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471155629 + ... + 1471156064.

Almost surely, 2^641423949074 is an apocalyptic number.

641423949074 is a deficient number, since it is larger than the sum of its proper divisors (329538909946).

641423949074 is a wasteful number, since it uses less digits than its factorization.

641423949074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942311804.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 641423949074 in words is "six hundred forty-one billion, four hundred twenty-three million, nine hundred forty-nine thousand, seventy-four".