581162953138 has 8 divisors (see below), whose sum is σ = 872411414832. Its totient is φ = 290359148196.

The previous prime is 581162953097. The next prime is 581162953141. The reversal of 581162953138 is 831359261185.

It is a happy number.

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

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, 111160920 + ... + 111166147.

It is an arithmetic number, because the mean of its divisors is an integer number (109051426854).

Almost surely, 2^581162953138 is an apocalyptic number.

581162953138 is a deficient number, since it is larger than the sum of its proper divisors (291248461694).

581162953138 is a wasteful number, since it uses less digits than its factorization.

581162953138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222328376.

The product of its digits is 1555200, while the sum is 52.

The spelling of 581162953138 in words is "five hundred eighty-one billion, one hundred sixty-two million, nine hundred fifty-three thousand, one hundred thirty-eight".