11066665515 has 16 divisors (see below), whose sum is σ = 17715686688. Its totient is φ = 5899214336.

The previous prime is 11066665507. The next prime is 11066665601. The reversal of 11066665515 is 51556666011.

It is a cyclic number.

It is not a de Polignac number, because 11066665515 - 2³ = 11066665507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157374 + ... + 216563.

It is an arithmetic number, because the mean of its divisors is an integer number (1107230418).

Almost surely, 2^11066665515 is an apocalyptic number.

11066665515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11066665515 is a deficient number, since it is larger than the sum of its proper divisors (6649021173).

11066665515 is a wasteful number, since it uses less digits than its factorization.

11066665515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375918.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 11066665515 in words is "eleven billion, sixty-six million, six hundred sixty-five thousand, five hundred fifteen".