641115261244 has 12 divisors (see below), whose sum is σ = 1123136456904. Its totient is φ = 320219130704.

The previous prime is 641115261221. The next prime is 641115261257. The reversal of 641115261244 is 442162511146.

It is a super-2 number, since 2×641115261244² (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 3 ways as a sum of consecutive naturals, for example, 84620719 + ... + 84628294.

It is an arithmetic number, because the mean of its divisors is an integer number (93594704742).

Almost surely, 2^641115261244 is an apocalyptic number.

It is an amenable number.

641115261244 is a deficient number, since it is larger than the sum of its proper divisors (482021195660).

641115261244 is a wasteful number, since it uses less digits than its factorization.

641115261244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169249964 (or 169249962 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The spelling of 641115261244 in words is "six hundred forty-one billion, one hundred fifteen million, two hundred sixty-one thousand, two hundred forty-four".