581426957868 has 24 divisors (see below), whose sum is σ = 1356684026880. Its totient is φ = 193805968080.

The previous prime is 581426957843. The next prime is 581426957897. The reversal of 581426957868 is 868759624185.

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, 508753 + ... + 1192343.

It is an arithmetic number, because the mean of its divisors is an integer number (56528501120).

Almost surely, 2^581426957868 is an apocalyptic number.

It is an amenable number.

581426957868 is an abundant number, since it is smaller than the sum of its proper divisors (775257069012).

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

581426957868 is a wasteful number, since it uses less digits than its factorization.

581426957868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754477 (or 754475 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 69.

The spelling of 581426957868 in words is "five hundred eighty-one billion, four hundred twenty-six million, nine hundred fifty-seven thousand, eight hundred sixty-eight".