11539471663 has 2 divisors, whose sum is σ = 11539471664. Its totient is φ = 11539471662.

The previous prime is 11539471637. The next prime is 11539471721. The reversal of 11539471663 is 36617493511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11539471663 - 2¹⁷ = 11539340591 is a prime.

It is a super-2 number, since 2×11539471663² (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 (11539471763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769735831 + 5769735832.

It is an arithmetic number, because the mean of its divisors is an integer number (5769735832).

Almost surely, 2^11539471663 is an apocalyptic number.

11539471663 is a deficient number, since it is larger than the sum of its proper divisors (1).

11539471663 is an equidigital number, since it uses as much as digits as its factorization.

11539471663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The spelling of 11539471663 in words is "eleven billion, five hundred thirty-nine million, four hundred seventy-one thousand, six hundred sixty-three".