16813235780 has 24 divisors (see below), whose sum is σ = 38517595200. Its totient is φ = 6113903840.

The previous prime is 16813235771. The next prime is 16813235783. The reversal of 16813235780 is 8753231861.

It is a happy number.

16813235780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (16813235783) by changing a digit.

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, 38211680 + ... + 38212119.

It is an arithmetic number, because the mean of its divisors is an integer number (1604899800).

Almost surely, 2^16813235780 is an apocalyptic number.

16813235780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16813235780 is an abundant number, since it is smaller than the sum of its proper divisors (21704359420).

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

16813235780 is a wasteful number, since it uses less digits than its factorization.

16813235780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76423819 (or 76423817 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 16813235780 in words is "sixteen billion, eight hundred thirteen million, two hundred thirty-five thousand, seven hundred eighty".