16260640513920 has 1280 divisors, whose sum is σ = 64124529638400. Its totient is φ = 3894021734400.

The previous prime is 16260640513877. The next prime is 16260640513937. The reversal of 16260640513920 is 2931504606261.

16260640513920 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 0 + 6 + 40 + 513 + 92 + 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 polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 21480370182 + ... + 21480370938.

It is an arithmetic number, because the mean of its divisors is an integer number (50097288780).

Almost surely, 2^{16260640513920} is an apocalyptic number.

16260640513920 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 16260640513920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32062264819200).

16260640513920 is an abundant number, since it is smaller than the sum of its proper divisors (47863889124480).

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

16260640513920 is a wasteful number, since it uses less digits than its factorization.

16260640513920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 16260640513920 in words is "sixteen trillion, two hundred sixty billion, six hundred forty million, five hundred thirteen thousand, nine hundred twenty".