16432995840 has 320 divisors, whose sum is σ = 56605519872. Its totient is φ = 4055040000.

The previous prime is 16432995767. The next prime is 16432995881. The reversal of 16432995840 is 4859923461.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5474340 + ... + 5477340.

Almost surely, 2^16432995840 is an apocalyptic number.

16432995840 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 16432995840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28302759936).

16432995840 is an abundant number, since it is smaller than the sum of its proper divisors (40172524032).

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

16432995840 is a wasteful number, since it uses less digits than its factorization.

16432995840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3065 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 16432995840 in words is "sixteen billion, four hundred thirty-two million, nine hundred ninety-five thousand, eight hundred forty".