16066352640 has 640 divisors, whose sum is σ = 59396198400. Its totient is φ = 3674603520.

The previous prime is 16066352629. The next prime is 16066352651. The reversal of 16066352640 is 4625366061.

It is an interprime number because it is at equal distance from previous prime (16066352629) and next prime (16066352651).

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89756071 + ... + 89756249.

It is an arithmetic number, because the mean of its divisors is an integer number (92806560).

Almost surely, 2^16066352640 is an apocalyptic number.

16066352640 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 16066352640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29698099200).

16066352640 is an abundant number, since it is smaller than the sum of its proper divisors (43329845760).

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

16066352640 is a wasteful number, since it uses less digits than its factorization.

16066352640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 16066352640 in words is "sixteen billion, sixty-six million, three hundred fifty-two thousand, six hundred forty".