16398353400 has 192 divisors, whose sum is σ = 59722427520. Its totient is φ = 3669542400.

The previous prime is 16398353393. The next prime is 16398353407. The reversal of 16398353400 is 435389361.

It is an interprime number because it is at equal distance from previous prime (16398353393) and next prime (16398353407).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16398353407) 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, 9762 + ... + 181361.

It is an arithmetic number, because the mean of its divisors is an integer number (311054310).

Almost surely, 2^16398353400 is an apocalyptic number.

16398353400 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 16398353400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29861213760).

16398353400 is an abundant number, since it is smaller than the sum of its proper divisors (43324074120).

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

16398353400 is a wasteful number, since it uses less digits than its factorization.

16398353400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191166 (or 191157 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 16398353400 in words is "sixteen billion, three hundred ninety-eight million, three hundred fifty-three thousand, four hundred".