18454387776 has 56 divisors (see below), whose sum is σ = 53266079904. Its totient is φ = 5592238080.

The previous prime is 18454387753. The next prime is 18454387817. The reversal of 18454387776 is 67778345481.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4366825 + ... + 4371048.

Almost surely, 2^18454387776 is an apocalyptic number.

18454387776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18454387776 is an abundant number, since it is smaller than the sum of its proper divisors (34811692128).

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

18454387776 is a wasteful number, since it uses less digits than its factorization.

18454387776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737899 (or 8737889 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 60.

The spelling of 18454387776 in words is "eighteen billion, four hundred fifty-four million, three hundred eighty-seven thousand, seven hundred seventy-six".