16326152640 has 1120 divisors, whose sum is σ = 72227358720. Its totient is φ = 3415965696.

The previous prime is 16326152627. The next prime is 16326152677. The reversal of 16326152640 is 4625162361.

16326152640 is a `hidden beast` number, since 1 + 6 + 3 + 2 + 6 + 1 + 5 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16326152595 and 16326152604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 206660121 + ... + 206660199.

Almost surely, 2^16326152640 is an apocalyptic number.

16326152640 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 16326152640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36113679360).

16326152640 is an abundant number, since it is smaller than the sum of its proper divisors (55901206080).

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

16326152640 is a wasteful number, since it uses less digits than its factorization.

16326152640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 16326152640 in words is "sixteen billion, three hundred twenty-six million, one hundred fifty-two thousand, six hundred forty".