16031728845 has 128 divisors (see below), whose sum is σ = 31726080000. Its totient is φ = 7615745280.

The previous prime is 16031728837. The next prime is 16031728897. The reversal of 16031728845 is 54882713061.

16031728845 is a `hidden beast` number, since 1 + 603 + 17 + 28 + 8 + 4 + 5 = 666.

It is not a de Polignac number, because 16031728845 - 2³ = 16031728837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16031728845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26763856 + ... + 26764454.

It is an arithmetic number, because the mean of its divisors is an integer number (247860000).

Almost surely, 2^16031728845 is an apocalyptic number.

16031728845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16031728845 is a deficient number, since it is larger than the sum of its proper divisors (15694351155).

16031728845 is a wasteful number, since it uses less digits than its factorization.

16031728845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 16031728845 in words is "sixteen billion, thirty-one million, seven hundred twenty-eight thousand, eight hundred forty-five".