16992478547 has 6 divisors (see below), whose sum is σ = 18677683164. Its totient is φ = 15447707660.

The previous prime is 16992478543. The next prime is 16992478553. The reversal of 16992478547 is 74587429961.

It is not a de Polignac number, because 16992478547 - 2² = 16992478543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16992478547.

It is not an unprimeable number, because it can be changed into a prime (16992478543) 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 5 ways as a sum of consecutive naturals, for example, 70216733 + ... + 70216974.

It is an arithmetic number, because the mean of its divisors is an integer number (3112947194).

Almost surely, 2^16992478547 is an apocalyptic number.

16992478547 is a deficient number, since it is larger than the sum of its proper divisors (1685204617).

16992478547 is a wasteful number, since it uses less digits than its factorization.

16992478547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140433729 (or 140433718 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 62.

The spelling of 16992478547 in words is "sixteen billion, nine hundred ninety-two million, four hundred seventy-eight thousand, five hundred forty-seven".