11055561515 has 8 divisors (see below), whose sum is σ = 13269490080. Its totient is φ = 8842571712.

The previous prime is 11055561497. The next prime is 11055561529. The reversal of 11055561515 is 51516555011.

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

It is a cyclic number.

It is not a de Polignac number, because 11055561515 - 2¹⁰ = 11055560491 is a prime.

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, 208514 + ... + 256103.

It is an arithmetic number, because the mean of its divisors is an integer number (1658686260).

Almost surely, 2^11055561515 is an apocalyptic number.

11055561515 is a deficient number, since it is larger than the sum of its proper divisors (2213928565).

11055561515 is an equidigital number, since it uses as much as digits as its factorization.

11055561515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469381.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 11055561515 in words is "eleven billion, fifty-five million, five hundred sixty-one thousand, five hundred fifteen".