641216254724 has 12 divisors (see below), whose sum is σ = 1122235827804. Its totient is φ = 320577446784.

The previous prime is 641216254699. The next prime is 641216254781. The reversal of 641216254724 is 427452612146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 568757305600 + 72458949124 = 754160^2 + 269182^2 .

It is a super-2 number, since 2×641216254724² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 7623089 + ... + 7706744.

It is an arithmetic number, because the mean of its divisors is an integer number (93519652317).

Almost surely, 2^641216254724 is an apocalyptic number.

It is an amenable number.

641216254724 is a deficient number, since it is larger than the sum of its proper divisors (481019573080).

641216254724 is a wasteful number, since it uses less digits than its factorization.

641216254724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340294 (or 15340292 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The spelling of 641216254724 in words is "six hundred forty-one billion, two hundred sixteen million, two hundred fifty-four thousand, seven hundred twenty-four".