16315749728 has 48 divisors (see below), whose sum is σ = 34023946320. Its totient is φ = 7675109376.

The previous prime is 16315749719. The next prime is 16315749739. The reversal of 16315749728 is 82794751361.

It is a self number, because there is not a number n which added to its sum of digits gives 16315749728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321003 + ... + 2328021.

It is an arithmetic number, because the mean of its divisors is an integer number (708832215).

Almost surely, 2^16315749728 is an apocalyptic number.

It is an amenable number.

16315749728 is an abundant number, since it is smaller than the sum of its proper divisors (17708196592).

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

16315749728 is a wasteful number, since it uses less digits than its factorization.

16315749728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11319 (or 11311 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The spelling of 16315749728 in words is "sixteen billion, three hundred fifteen million, seven hundred forty-nine thousand, seven hundred twenty-eight".