16123454400 has 168 divisors, whose sum is σ = 53385405040. Its totient is φ = 4260003840.

The previous prime is 16123454383. The next prime is 16123454407. The reversal of 16123454400 is 445432161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16123454407) 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, 507792 + ... + 538608.

Almost surely, 2^16123454400 is an apocalyptic number.

16123454400 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 16123454400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26692702520).

16123454400 is an abundant number, since it is smaller than the sum of its proper divisors (37261950640).

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

16123454400 is a wasteful number, since it uses less digits than its factorization.

16123454400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30951 (or 30936 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 16123454400 its reverse (445432161), we get a palindrome (16568886561).

The spelling of 16123454400 in words is "sixteen billion, one hundred twenty-three million, four hundred fifty-four thousand, four hundred".