16143339400 has 72 divisors (see below), whose sum is σ = 39759349770. Its totient is φ = 6074703360.

The previous prime is 16143339397. The next prime is 16143339409. The reversal of 16143339400 is 493334161.

It can be written as a sum of positive squares in 3 ways, for example, as 13845287556 + 2298051844 = 117666^2 + 47938^2 .

It is a hoax number, since the sum of its digits (34) 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 (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143339409) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7407511 + ... + 7409689.

Almost surely, 2^16143339400 is an apocalyptic number.

16143339400 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 16143339400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19879674885).

16143339400 is an abundant number, since it is smaller than the sum of its proper divisors (23616010370).

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

16143339400 is an equidigital number, since it uses as much as digits as its factorization.

16143339400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

Multiplying 16143339400 by its sum of digits (34), we get a square (548873539600 = 740860²).

16143339400 divided by its sum of digits (34) gives a square (474804100 = 21790²).

The spelling of 16143339400 in words is "sixteen billion, one hundred forty-three million, three hundred thirty-nine thousand, four hundred".