11550015655 has 8 divisors (see below), whose sum is σ = 13861430352. Its totient is φ = 9239071488.

The previous prime is 11550015649. The next prime is 11550015671. The reversal of 11550015655 is 55651005511.

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 11550015655 - 2⁷ = 11550015527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11550015655.

It is a congruent 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, 61162 + ... + 163831.

It is an arithmetic number, because the mean of its divisors is an integer number (1732678794).

Almost surely, 2^11550015655 is an apocalyptic number.

11550015655 is a deficient number, since it is larger than the sum of its proper divisors (2311414697).

11550015655 is a wasteful number, since it uses less digits than its factorization.

11550015655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235265.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 11550015655 in words is "eleven billion, five hundred fifty million, fifteen thousand, six hundred fifty-five".