16983440787 has 32 divisors (see below), whose sum is σ = 24123225600. Its totient is φ = 10624469856.

The previous prime is 16983440767. The next prime is 16983440801. The reversal of 16983440787 is 78704438961.

It is not a de Polignac number, because 16983440787 - 2⁸ = 16983440531 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16983440767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1930164 + ... + 1938942.

It is an arithmetic number, because the mean of its divisors is an integer number (753850800).

Almost surely, 2^16983440787 is an apocalyptic number.

16983440787 is a deficient number, since it is larger than the sum of its proper divisors (7139784813).

16983440787 is an frugal number, since it uses more digits than its factorization.

16983440787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904 (or 8858 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 16983440787 in words is "sixteen billion, nine hundred eighty-three million, four hundred forty thousand, seven hundred eighty-seven".