11534866631 has 2 divisors, whose sum is σ = 11534866632. Its totient is φ = 11534866630.

The previous prime is 11534866621. The next prime is 11534866633. The reversal of 11534866631 is 13666843511.

It is a strong prime.

It is an emirp because it is prime and its reverse (13666843511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11534866631 - 2¹⁴ = 11534850247 is a prime.

It is a super-2 number, since 2×11534866631² (a number of 21 digits) contains 22 as substring.

Together with 11534866633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11534866633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767433315 + 5767433316.

It is an arithmetic number, because the mean of its divisors is an integer number (5767433316).

Almost surely, 2^11534866631 is an apocalyptic number.

11534866631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11534866631 is an equidigital number, since it uses as much as digits as its factorization.

11534866631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The spelling of 11534866631 in words is "eleven billion, five hundred thirty-four million, eight hundred sixty-six thousand, six hundred thirty-one".