16345344400 has 120 divisors (see below), whose sum is σ = 48959705664. Its totient is φ = 5094643200.

The previous prime is 16345344349. The next prime is 16345344409. The reversal of 16345344400 is 444354361.

It is a super-2 number, since 2×16345344400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16345344409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234547 + ... + 296146.

Almost surely, 2^16345344400 is an apocalyptic number.

16345344400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16345344400 is an abundant number, since it is smaller than the sum of its proper divisors (32614361264).

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

16345344400 is a wasteful number, since it uses less digits than its factorization.

16345344400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530729 (or 530718 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 16345344400 its reverse (444354361), we get a palindrome (16789698761).

The spelling of 16345344400 in words is "sixteen billion, three hundred forty-five million, three hundred forty-four thousand, four hundred".