16334911640 has 64 divisors (see below), whose sum is σ = 37488290400. Its totient is φ = 6403617792.

The previous prime is 16334911633. The next prime is 16334911643. The reversal of 16334911640 is 4611943361.

It is a junction number, because it is equal to n+sod(n) for n = 16334911594 and 16334911603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16334911643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186231 + ... + 2193689.

Almost surely, 2^16334911640 is an apocalyptic number.

16334911640 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 16334911640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18744145200).

16334911640 is an abundant number, since it is smaller than the sum of its proper divisors (21153378760).

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

16334911640 is a wasteful number, since it uses less digits than its factorization.

16334911640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8556 (or 8552 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 16334911640 in words is "sixteen billion, three hundred thirty-four million, nine hundred eleven thousand, six hundred forty".