16604403450 has 48 divisors (see below), whose sum is σ = 42183300096. Its totient is φ = 4319843200.

The previous prime is 16604403419. The next prime is 16604403451. The reversal of 16604403450 is 5430440661.

It is not an unprimeable number, because it can be changed into a prime (16604403451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1343802 + ... + 1356101.

It is an arithmetic number, because the mean of its divisors is an integer number (878818752).

Almost surely, 2^16604403450 is an apocalyptic number.

16604403450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16604403450 is an abundant number, since it is smaller than the sum of its proper divisors (25578896646).

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

16604403450 is a wasteful number, since it uses less digits than its factorization.

16604403450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699959 (or 2699954 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 16604403450 in words is "sixteen billion, six hundred four million, four hundred three thousand, four hundred fifty".