11863977334591 has 16 divisors (see below), whose sum is σ = 12068885606400. Its totient is φ = 11660821178688.

The previous prime is 11863977334579. The next prime is 11863977334607. The reversal of 11863977334591 is 19543377936811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11863977334591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11863977334511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12533890 + ... + 13447168.

It is an arithmetic number, because the mean of its divisors is an integer number (754305350400).

Almost surely, 2^{11863977334591} is an apocalyptic number.

11863977334591 is a deficient number, since it is larger than the sum of its proper divisors (204908271809).

11863977334591 is an equidigital number, since it uses as much as digits as its factorization.

11863977334591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914238.

The product of its digits is 102876480, while the sum is 67.

The spelling of 11863977334591 in words is "eleven trillion, eight hundred sixty-three billion, nine hundred seventy-seven million, three hundred thirty-four thousand, five hundred ninety-one".