38561340591 has 12 divisors (see below), whose sum is σ = 55864999632. Its totient is φ = 25631274816.

The previous prime is 38561340563. The next prime is 38561340613. The reversal of 38561340591 is 19504316583.

38561340591 is a `hidden beast` number, since 3 + 8 + 5 + 6 + 13 + 40 + 591 = 666.

It is not a de Polignac number, because 38561340591 - 2¹⁰ = 38561339567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38561340511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6353931 + ... + 6359996.

It is an arithmetic number, because the mean of its divisors is an integer number (4655416636).

Almost surely, 2^38561340591 is an apocalyptic number.

38561340591 is a deficient number, since it is larger than the sum of its proper divisors (17303659041).

38561340591 is a wasteful number, since it uses less digits than its factorization.

38561340591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714270 (or 12714267 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 38561340591 in words is "thirty-eight billion, five hundred sixty-one million, three hundred forty thousand, five hundred ninety-one".