18091953623028 has 12 divisors (see below), whose sum is σ = 42214558453760. Its totient is φ = 6030651207672.

The previous prime is 18091953623027. The next prime is 18091953623041. The reversal of 18091953623028 is 82032635919081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18091953623027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753831400948 + ... + 753831400971.

Almost surely, 2^{18091953623028} is an apocalyptic number.

It is an amenable number.

18091953623028 is an abundant number, since it is smaller than the sum of its proper divisors (24122604830732).

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

18091953623028 is a wasteful number, since it uses less digits than its factorization.

18091953623028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507662801926 (or 1507662801924 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 18091953623028 in words is "eighteen trillion, ninety-one billion, nine hundred fifty-three million, six hundred twenty-three thousand, twenty-eight".