18106244625 has 64 divisors (see below), whose sum is σ = 34486732800. Its totient is φ = 8264203200.

The previous prime is 18106244623. The next prime is 18106244641. The reversal of 18106244625 is 52644260181.

It is a happy number.

It is not a de Polignac number, because 18106244625 - 2¹ = 18106244623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18106244623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1787826 + ... + 1797924.

It is an arithmetic number, because the mean of its divisors is an integer number (538855200).

Almost surely, 2^18106244625 is an apocalyptic number.

18106244625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18106244625 is a deficient number, since it is larger than the sum of its proper divisors (16380488175).

18106244625 is a wasteful number, since it uses less digits than its factorization.

18106244625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807 (or 10797 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 18106244625 in words is "eighteen billion, one hundred six million, two hundred forty-four thousand, six hundred twenty-five".