11533402537 has 2 divisors, whose sum is σ = 11533402538. Its totient is φ = 11533402536.

The previous prime is 11533402481. The next prime is 11533402547. The reversal of 11533402537 is 73520433511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11367611161 + 165791376 = 106619^2 + 12876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11533402537 is a prime.

It is not a weakly prime, because it can be changed into another prime (11533402547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766701268 + 5766701269.

It is an arithmetic number, because the mean of its divisors is an integer number (5766701269).

Almost surely, 2^11533402537 is an apocalyptic number.

It is an amenable number.

11533402537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11533402537 is an equidigital number, since it uses as much as digits as its factorization.

11533402537 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 11533402537 in words is "eleven billion, five hundred thirty-three million, four hundred two thousand, five hundred thirty-seven".