11546631689 has 2 divisors, whose sum is σ = 11546631690. Its totient is φ = 11546631688.

The previous prime is 11546631637. The next prime is 11546631743. The reversal of 11546631689 is 98613664511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6731382025 + 4815249664 = 82045^2 + 69392^2 .

It is a cyclic number.

It is not a de Polignac number, because 11546631689 - 2¹⁶ = 11546566153 is a prime.

It is a super-2 number, since 2×11546631689² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11546681689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5773315844 + 5773315845.

It is an arithmetic number, because the mean of its divisors is an integer number (5773315845).

Almost surely, 2^11546631689 is an apocalyptic number.

It is an amenable number.

11546631689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11546631689 is an equidigital number, since it uses as much as digits as its factorization.

11546631689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The spelling of 11546631689 in words is "eleven billion, five hundred forty-six million, six hundred thirty-one thousand, six hundred eighty-nine".