16249472891 has 16 divisors (see below), whose sum is σ = 16794711648. Its totient is φ = 15710112000.

The previous prime is 16249472807. The next prime is 16249472903. The reversal of 16249472891 is 19827494261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16249472891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16249471891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4920941 + ... + 4924241.

It is an arithmetic number, because the mean of its divisors is an integer number (1049669478).

Almost surely, 2^16249472891 is an apocalyptic number.

16249472891 is a deficient number, since it is larger than the sum of its proper divisors (545238757).

16249472891 is a wasteful number, since it uses less digits than its factorization.

16249472891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142.

The product of its digits is 1741824, while the sum is 53.

The spelling of 16249472891 in words is "sixteen billion, two hundred forty-nine million, four hundred seventy-two thousand, eight hundred ninety-one".