16491592485 has 12 divisors (see below), whose sum is σ = 28585427052. Its totient is φ = 8795515968.

The previous prime is 16491592477. The next prime is 16491592499. The reversal of 16491592485 is 58429519461.

16491592485 is a `hidden beast` number, since 1 + 6 + 4 + 9 + 1 + 592 + 48 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6570237249 + 9921355236 = 81057^2 + 99606^2 .

It is not a de Polignac number, because 16491592485 - 2³ = 16491592477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183239872 + ... + 183239961.

It is an arithmetic number, because the mean of its divisors is an integer number (2382118921).

Almost surely, 2^16491592485 is an apocalyptic number.

16491592485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16491592485 is a deficient number, since it is larger than the sum of its proper divisors (12093834567).

16491592485 is a wasteful number, since it uses less digits than its factorization.

16491592485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366479844 (or 366479841 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 16491592485 in words is "sixteen billion, four hundred ninety-one million, five hundred ninety-two thousand, four hundred eighty-five".