11066720515 has 8 divisors (see below), whose sum is σ = 13296205728. Its totient is φ = 8842615680.

The previous prime is 11066720477. The next prime is 11066720543. The reversal of 11066720515 is 51502766011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11066720515 - 2⁹ = 11066720003 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340566 + ... + 1348795.

It is an arithmetic number, because the mean of its divisors is an integer number (1662025716).

Almost surely, 2^11066720515 is an apocalyptic number.

11066720515 is a deficient number, since it is larger than the sum of its proper divisors (2229485213).

11066720515 is an equidigital number, since it uses as much as digits as its factorization.

11066720515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690189.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 11066720515 in words is "eleven billion, sixty-six million, seven hundred twenty thousand, five hundred fifteen".