11391535927 has 2 divisors, whose sum is σ = 11391535928. Its totient is φ = 11391535926.

The previous prime is 11391535853. The next prime is 11391536027. The reversal of 11391535927 is 72953519311.

It is a weak prime.

It is an emirp because it is prime and its reverse (72953519311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11391535927 - 2²³ = 11383147319 is a prime.

It is a super-2 number, since 2×11391535927² (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 (11391835927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695767963 + 5695767964.

It is an arithmetic number, because the mean of its divisors is an integer number (5695767964).

Almost surely, 2^11391535927 is an apocalyptic number.

11391535927 is a deficient number, since it is larger than the sum of its proper divisors (1).

11391535927 is an equidigital number, since it uses as much as digits as its factorization.

11391535927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 46.

The spelling of 11391535927 in words is "eleven billion, three hundred ninety-one million, five hundred thirty-five thousand, nine hundred twenty-seven".