11563021619 has 2 divisors, whose sum is σ = 11563021620. Its totient is φ = 11563021618.

The previous prime is 11563021609. The next prime is 11563021627. The reversal of 11563021619 is 91612036511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11563021619 - 2¹² = 11563017523 is a prime.

It is a super-2 number, since 2×11563021619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11563021609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781510809 + 5781510810.

It is an arithmetic number, because the mean of its divisors is an integer number (5781510810).

Almost surely, 2^11563021619 is an apocalyptic number.

11563021619 is a deficient number, since it is larger than the sum of its proper divisors (1).

11563021619 is an equidigital number, since it uses as much as digits as its factorization.

11563021619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 11563021619 in words is "eleven billion, five hundred sixty-three million, twenty-one thousand, six hundred nineteen".