11550023021555 has 32 divisors (see below), whose sum is σ = 14769803217600. Its totient is φ = 8640507432960.

The previous prime is 11550023021513. The next prime is 11550023021567. The reversal of 11550023021555 is 55512032005511.

It is not a de Polignac number, because 11550023021555 - 2¹² = 11550023017459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366291140 + ... + 366322670.

It is an arithmetic number, because the mean of its divisors is an integer number (461556350550).

Almost surely, 2^{11550023021555} is an apocalyptic number.

11550023021555 is a deficient number, since it is larger than the sum of its proper divisors (3219780196045).

11550023021555 is a wasteful number, since it uses less digits than its factorization.

11550023021555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59159.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 11550023021555 in words is "eleven trillion, five hundred fifty billion, twenty-three million, twenty-one thousand, five hundred fifty-five".