16783452400 has 240 divisors, whose sum is σ = 49868058240. Its totient is φ = 5336755200.

The previous prime is 16783452379. The next prime is 16783452401. The reversal of 16783452400 is 425438761.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16783452401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1079079 + ... + 1094521.

It is an arithmetic number, because the mean of its divisors is an integer number (207783576).

Almost surely, 2^16783452400 is an apocalyptic number.

16783452400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16783452400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24934029120).

16783452400 is an abundant number, since it is smaller than the sum of its proper divisors (33084605840).

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

16783452400 is a wasteful number, since it uses less digits than its factorization.

16783452400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15504 (or 15493 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 16783452400 in words is "sixteen billion, seven hundred eighty-three million, four hundred fifty-two thousand, four hundred".