11331365992537 has 2 divisors, whose sum is σ = 11331365992538. Its totient is φ = 11331365992536.

The previous prime is 11331365992519. The next prime is 11331365992619. The reversal of 11331365992537 is 73529956313311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10223776031296 + 1107589961241 = 3197464^2 + 1052421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331365992537 is a prime.

It is a super-2 number, since 2×11331365992537² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11331365992337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665682996268 + 5665682996269.

It is an arithmetic number, because the mean of its divisors is an integer number (5665682996269).

Almost surely, 2^{11331365992537} is an apocalyptic number.

It is an amenable number.

11331365992537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331365992537 is an equidigital number, since it uses as much as digits as its factorization.

11331365992537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13778100, while the sum is 58.

The spelling of 11331365992537 in words is "eleven trillion, three hundred thirty-one billion, three hundred sixty-five million, nine hundred ninety-two thousand, five hundred thirty-seven".