16642789800 has 192 divisors, whose sum is σ = 63498852480. Its totient is φ = 3511434240.

The previous prime is 16642789777. The next prime is 16642789853. The reversal of 16642789800 is 898724661.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97807 + ... + 207006.

It is an arithmetic number, because the mean of its divisors is an integer number (330723190).

Almost surely, 2^16642789800 is an apocalyptic number.

16642789800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16642789800 is an abundant number, since it is smaller than the sum of its proper divisors (46856062680).

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

16642789800 is a wasteful number, since it uses less digits than its factorization.

16642789800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304852 (or 304843 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 16642789800 in words is "sixteen billion, six hundred forty-two million, seven hundred eighty-nine thousand, eight hundred".