16255640800 has 72 divisors (see below), whose sum is σ = 45353253456. Its totient is φ = 5573360640.

The previous prime is 16255640789. The next prime is 16255640801. The reversal of 16255640800 is 804655261.

It is a self number, because there is not a number n which added to its sum of digits gives 16255640800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16255640801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1445797 + ... + 1456996.

It is an arithmetic number, because the mean of its divisors is an integer number (629906298).

Almost surely, 2^16255640800 is an apocalyptic number.

16255640800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16255640800 is an abundant number, since it is smaller than the sum of its proper divisors (29097612656).

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

16255640800 is a wasteful number, since it uses less digits than its factorization.

16255640800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902820 (or 2902807 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 16255640800 in words is "sixteen billion, two hundred fifty-five million, six hundred forty thousand, eight hundred".