16562745720 has 384 divisors, whose sum is σ = 59757834240. Its totient is φ = 3959746560.

The previous prime is 16562745713. The next prime is 16562745733. The reversal of 16562745720 is 2754726561.

16562745720 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 2 + 74 + 572 + 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 95 ways as a sum of consecutive naturals, for example, 12710589 + ... + 12711891.

It is an arithmetic number, because the mean of its divisors is an integer number (155619360).

Almost surely, 2^16562745720 is an apocalyptic number.

16562745720 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 16562745720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29878917120).

16562745720 is an abundant number, since it is smaller than the sum of its proper divisors (43195088520).

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

16562745720 is a wasteful number, since it uses less digits than its factorization.

16562745720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 16562745720 in words is "sixteen billion, five hundred sixty-two million, seven hundred forty-five thousand, seven hundred twenty".