641326126452 has 24 divisors (see below), whose sum is σ = 1632466504032. Its totient is φ = 194341250400.

The previous prime is 641326126417. The next prime is 641326126489. The reversal of 641326126452 is 254621623146.

It is a happy number.

It is a super-2 number, since 2×641326126452² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 2429265499 + ... + 2429265762.

It is an arithmetic number, because the mean of its divisors is an integer number (68019437668).

Almost surely, 2^641326126452 is an apocalyptic number.

It is an amenable number.

641326126452 is an abundant number, since it is smaller than the sum of its proper divisors (991140377580).

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

641326126452 is a wasteful number, since it uses less digits than its factorization.

641326126452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858531279 (or 4858531277 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

Adding to 641326126452 its reverse (254621623146), we get a palindrome (895947749598).

The spelling of 641326126452 in words is "six hundred forty-one billion, three hundred twenty-six million, one hundred twenty-six thousand, four hundred fifty-two".