16365985428 has 48 divisors (see below), whose sum is σ = 41158889856. Its totient is φ = 5031511680.

The previous prime is 16365985399. The next prime is 16365985469. The reversal of 16365985428 is 82458956361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147898 + ... + 233678.

It is an arithmetic number, because the mean of its divisors is an integer number (857476872).

Almost surely, 2^16365985428 is an apocalyptic number.

It is an amenable number.

16365985428 is an abundant number, since it is smaller than the sum of its proper divisors (24792904428).

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

16365985428 is a wasteful number, since it uses less digits than its factorization.

16365985428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87024 (or 87022 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 57.

The spelling of 16365985428 in words is "sixteen billion, three hundred sixty-five million, nine hundred eighty-five thousand, four hundred twenty-eight".