18026115552 has 36 divisors (see below), whose sum is σ = 51261766920. Its totient is φ = 6008705088.

The previous prime is 18026115467. The next prime is 18026115553. The reversal of 18026115552 is 25551162081.

18026115552 is a `hidden beast` number, since 1 + 80 + 26 + 1 + 1 + 5 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18026115553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31295052 + ... + 31295627.

It is an arithmetic number, because the mean of its divisors is an integer number (1423937970).

Almost surely, 2^18026115552 is an apocalyptic number.

18026115552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18026115552 is an abundant number, since it is smaller than the sum of its proper divisors (33235651368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18026115552 is a wasteful number, since it uses less digits than its factorization.

18026115552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62590695 (or 62590684 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 18026115552 in words is "eighteen billion, twenty-six million, one hundred fifteen thousand, five hundred fifty-two".