581981248086 has 16 divisors (see below), whose sum is σ = 1330242852864. Its totient is φ = 166280356584.

The previous prime is 581981248073. The next prime is 581981248157. The reversal of 581981248086 is 680842189185.

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, 6928348150 + ... + 6928348233.

It is an arithmetic number, because the mean of its divisors is an integer number (83140178304).

Almost surely, 2^581981248086 is an apocalyptic number.

581981248086 is an abundant number, since it is smaller than the sum of its proper divisors (748261604778).

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

581981248086 is a wasteful number, since it uses less digits than its factorization.

581981248086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13856696395.

The product of its (nonzero) digits is 8847360, while the sum is 60.

The spelling of 581981248086 in words is "five hundred eighty-one billion, nine hundred eighty-one million, two hundred forty-eight thousand, eighty-six".