16334963640 has 192 divisors, whose sum is σ = 53766498240. Its totient is φ = 4300646400.

The previous prime is 16334963591. The next prime is 16334963657. The reversal of 16334963640 is 4636943361.

16334963640 is a `hidden beast` number, since 1 + 6 + 3 + 3 + 4 + 9 + 636 + 4 + 0 = 666.

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 (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22284714 + ... + 22285446.

It is an arithmetic number, because the mean of its divisors is an integer number (280033845).

Almost surely, 2^16334963640 is an apocalyptic number.

16334963640 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 16334963640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26883249120).

16334963640 is an abundant number, since it is smaller than the sum of its proper divisors (37431534600).

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

16334963640 is a wasteful number, since it uses less digits than its factorization.

16334963640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The spelling of 16334963640 in words is "sixteen billion, three hundred thirty-four million, nine hundred sixty-three thousand, six hundred forty".