18309153248855 has 16 divisors (see below), whose sum is σ = 25344365944320. Its totient is φ = 12437512912032.

The previous prime is 18309153248839. The next prime is 18309153248861. The reversal of 18309153248855 is 55884235190381.

It is a cyclic number.

It is not a de Polignac number, because 18309153248855 - 2⁴ = 18309153248839 is a prime.

It is a super-2 number, since 2×18309153248855² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2444475995 + ... + 2444483484.

It is an arithmetic number, because the mean of its divisors is an integer number (1584022871520).

Almost surely, 2^{18309153248855} is an apocalyptic number.

18309153248855 is a deficient number, since it is larger than the sum of its proper divisors (7035212695465).

18309153248855 is a wasteful number, since it uses less digits than its factorization.

18309153248855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888959598.

The product of its (nonzero) digits is 41472000, while the sum is 62.

The spelling of 18309153248855 in words is "eighteen trillion, three hundred nine billion, one hundred fifty-three million, two hundred forty-eight thousand, eight hundred fifty-five".