18850350533555 has 16 divisors (see below), whose sum is σ = 22785885550944. Its totient is φ = 14969973891840.

The previous prime is 18850350533551. The next prime is 18850350533557. The reversal of 18850350533555 is 55533505305881.

It is not a de Polignac number, because 18850350533555 - 2² = 18850350533551 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 18850350533555.

It is not an unprimeable number, because it can be changed into a prime (18850350533551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54305729 + ... + 54651741.

It is an arithmetic number, because the mean of its divisors is an integer number (1424117846934).

Almost surely, 2^{18850350533555} is an apocalyptic number.

18850350533555 is a deficient number, since it is larger than the sum of its proper divisors (3935535017389).

18850350533555 is a wasteful number, since it uses less digits than its factorization.

18850350533555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425686.

The product of its (nonzero) digits is 27000000, while the sum is 56.

The spelling of 18850350533555 in words is "eighteen trillion, eight hundred fifty billion, three hundred fifty million, five hundred thirty-three thousand, five hundred fifty-five".