16432657920 has 400 divisors, whose sum is σ = 67270614048. Its totient is φ = 3755704320.

The previous prime is 16432657841. The next prime is 16432657937. The reversal of 16432657920 is 2975623461.

16432657920 is a `hidden beast` number, since 16 + 43 + 2 + 6 + 579 + 20 = 666.

16432657920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1445860 + ... + 1457180.

Almost surely, 2^16432657920 is an apocalyptic number.

16432657920 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 16432657920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33635307024).

16432657920 is an abundant number, since it is smaller than the sum of its proper divisors (50837956128).

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

16432657920 is an equidigital number, since it uses as much as digits as its factorization.

16432657920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363 (or 11338 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 16432657920 in words is "sixteen billion, four hundred thirty-two million, six hundred fifty-seven thousand, nine hundred twenty".