11213661539 has 2 divisors, whose sum is σ = 11213661540. Its totient is φ = 11213661538.

The previous prime is 11213661497. The next prime is 11213661553. The reversal of 11213661539 is 93516631211.

11213661539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11213661539 - 2³² = 6918694243 is a prime.

It is a super-2 number, since 2×11213661539² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11213661139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606830769 + 5606830770.

It is an arithmetic number, because the mean of its divisors is an integer number (5606830770).

Almost surely, 2^11213661539 is an apocalyptic number.

11213661539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213661539 is an equidigital number, since it uses as much as digits as its factorization.

11213661539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The spelling of 11213661539 in words is "eleven billion, two hundred thirteen million, six hundred sixty-one thousand, five hundred thirty-nine".