581199640893 has 12 divisors (see below), whose sum is σ = 841929935808. Its totient is φ = 386349807240.

The previous prime is 581199640891. The next prime is 581199640927. The reversal of 581199640893 is 398046991185.

581199640893 is a `hidden beast` number, since 58 + 1 + 1 + 9 + 96 + 408 + 93 = 666.

581199640893 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 581199640893 - 2¹ = 581199640891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 581199640893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581199640891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93048373 + ... + 93054618.

It is an arithmetic number, because the mean of its divisors is an integer number (70160827984).

Almost surely, 2^581199640893 is an apocalyptic number.

It is an amenable number.

581199640893 is a deficient number, since it is larger than the sum of its proper divisors (260730294915).

581199640893 is a wasteful number, since it uses less digits than its factorization.

581199640893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186103344 (or 186103341 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 581199640893 in words is "five hundred eighty-one billion, one hundred ninety-nine million, six hundred forty thousand, eight hundred ninety-three".