581413378139 has 4 divisors (see below), whose sum is σ = 634269139800. Its totient is φ = 528557616480.

The previous prime is 581413378081. The next prime is 581413378237. The reversal of 581413378139 is 931873314185.

It is a happy number.

581413378139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581413378139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581413378639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26427880814 + ... + 26427880835.

It is an arithmetic number, because the mean of its divisors is an integer number (158567284950).

Almost surely, 2^581413378139 is an apocalyptic number.

581413378139 is a deficient number, since it is larger than the sum of its proper divisors (52855761661).

581413378139 is a wasteful number, since it uses less digits than its factorization.

581413378139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52855761660.

The product of its digits is 2177280, while the sum is 53.

The spelling of 581413378139 in words is "five hundred eighty-one billion, four hundred thirteen million, three hundred seventy-eight thousand, one hundred thirty-nine".