18445401375 has 16 divisors (see below), whose sum is σ = 30693148512. Its totient is φ = 9837547200.

The previous prime is 18445401323. The next prime is 18445401407. The reversal of 18445401375 is 57310454481.

It is not a de Polignac number, because 18445401375 - 2⁶ = 18445401311 is a prime.

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, 24593494 + ... + 24594243.

It is an arithmetic number, because the mean of its divisors is an integer number (1918321782).

Almost surely, 2^18445401375 is an apocalyptic number.

18445401375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18445401375 is a deficient number, since it is larger than the sum of its proper divisors (12247747137).

18445401375 is an equidigital number, since it uses as much as digits as its factorization.

18445401375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49187755 (or 49187745 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 18445401375 in words is "eighteen billion, four hundred forty-five million, four hundred one thousand, three hundred seventy-five".