18446670336 has 40 divisors (see below), whose sum is σ = 49143086784. Its totient is φ = 6148889600.

The previous prime is 18446670329. The next prime is 18446670377. The reversal of 18446670336 is 63307664481.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6003240 + ... + 6006311.

Almost surely, 2^18446670336 is an apocalyptic number.

18446670336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18446670336 is an abundant number, since it is smaller than the sum of its proper divisors (30696416448).

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

18446670336 is an equidigital number, since it uses as much as digits as its factorization.

18446670336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12009572 (or 12009556 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 18446670336 in words is "eighteen billion, four hundred forty-six million, six hundred seventy thousand, three hundred thirty-six".