18125153623 has 4 divisors (see below), whose sum is σ = 18139216320. Its totient is φ = 18111090928.

The previous prime is 18125153621. The next prime is 18125153639. The reversal of 18125153623 is 32635152181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18125153623 - 2¹ = 18125153621 is a prime.

It is a super-2 number, since 2×18125153623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125153621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7029415 + ... + 7031992.

It is an arithmetic number, because the mean of its divisors is an integer number (4534804080).

Almost surely, 2^18125153623 is an apocalyptic number.

18125153623 is a deficient number, since it is larger than the sum of its proper divisors (14062697).

18125153623 is a wasteful number, since it uses less digits than its factorization.

18125153623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14062696.

The product of its digits is 43200, while the sum is 37.

The spelling of 18125153623 in words is "eighteen billion, one hundred twenty-five million, one hundred fifty-three thousand, six hundred twenty-three".