11916631583 has 2 divisors, whose sum is σ = 11916631584. Its totient is φ = 11916631582.

The previous prime is 11916631561. The next prime is 11916631589. The reversal of 11916631583 is 38513661911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11916631583 - 2⁸ = 11916631327 is a prime.

It is a super-2 number, since 2×11916631583² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11916631589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5958315791 + 5958315792.

It is an arithmetic number, because the mean of its divisors is an integer number (5958315792).

Almost surely, 2^11916631583 is an apocalyptic number.

11916631583 is a deficient number, since it is larger than the sum of its proper divisors (1).

11916631583 is an equidigital number, since it uses as much as digits as its factorization.

11916631583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The spelling of 11916631583 in words is "eleven billion, nine hundred sixteen million, six hundred thirty-one thousand, five hundred eighty-three".