16345919952 has 120 divisors (see below), whose sum is σ = 46680012288. Its totient is φ = 5337696000.

The previous prime is 16345919929. The next prime is 16345919999. The reversal of 16345919952 is 25991954361.

16345919952 is a `hidden beast` number, since 16 + 34 + 591 + 9 + 9 + 5 + 2 = 666.

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, 6951577 + ... + 6953927.

Almost surely, 2^16345919952 is an apocalyptic number.

16345919952 is a gapful number since it is divisible by the number (12) 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 16345919952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23340006144).

16345919952 is an abundant number, since it is smaller than the sum of its proper divisors (30334092336).

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

16345919952 is a wasteful number, since it uses less digits than its factorization.

16345919952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329 (or 3320 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The spelling of 16345919952 in words is "sixteen billion, three hundred forty-five million, nine hundred nineteen thousand, nine hundred fifty-two".