11533042537 has 2 divisors, whose sum is σ = 11533042538. Its totient is φ = 11533042536.

The previous prime is 11533042529. The next prime is 11533042553. The reversal of 11533042537 is 73524033511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10596437721 + 936604816 = 102939^2 + 30604^2 .

It is an emirp because it is prime and its reverse (73524033511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11533042537 - 2³ = 11533042529 is a prime.

It is a super-2 number, since 2×11533042537² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11533042597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766521268 + 5766521269.

It is an arithmetic number, because the mean of its divisors is an integer number (5766521269).

Almost surely, 2^11533042537 is an apocalyptic number.

It is an amenable number.

11533042537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11533042537 is an equidigital number, since it uses as much as digits as its factorization.

11533042537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 11533042537 in words is "eleven billion, five hundred thirty-three million, forty-two thousand, five hundred thirty-seven".