16499006400 has 168 divisors, whose sum is σ = 54330285040. Its totient is φ = 4383498240.

The previous prime is 16499006387. The next prime is 16499006449. The reversal of 16499006400 is 460099461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323396 + ... + 1335804.

Almost surely, 2^16499006400 is an apocalyptic number.

16499006400 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 16499006400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27165142520).

16499006400 is an abundant number, since it is smaller than the sum of its proper divisors (37831278640).

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

16499006400 is a wasteful number, since it uses less digits than its factorization.

16499006400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12711 (or 12696 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 16499006400 in words is "sixteen billion, four hundred ninety-nine million, six thousand, four hundred".