11663000421515 has 12 divisors (see below), whose sum is σ = 14345282384832. Its totient is φ = 9102829590720.

The previous prime is 11663000421509. The next prime is 11663000421517. The reversal of 11663000421515 is 51512400036611.

11663000421515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11663000421515 - 2²⁰ = 11662999372939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11663000421517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 693804827 + ... + 693821636.

It is an arithmetic number, because the mean of its divisors is an integer number (1195440198736).

Almost surely, 2^{11663000421515} is an apocalyptic number.

11663000421515 is a deficient number, since it is larger than the sum of its proper divisors (2682281963317).

11663000421515 is an equidigital number, since it uses as much as digits as its factorization.

11663000421515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387626550 (or 1387626509 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 11663000421515 in words is "eleven trillion, six hundred sixty-three billion, four hundred twenty-one thousand, five hundred fifteen".