16990497783 has 24 divisors (see below), whose sum is σ = 28249603200. Its totient is φ = 9639003024.

The previous prime is 16990497751. The next prime is 16990497841. The reversal of 16990497783 is 38779409961.

16990497783 is a `hidden beast` number, since 1 + 69 + 9 + 0 + 497 + 7 + 83 = 666.

It is not a de Polignac number, because 16990497783 - 2⁵ = 16990497751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 16990497783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990497283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 961353 + ... + 978866.

It is an arithmetic number, because the mean of its divisors is an integer number (1177066800).

Almost surely, 2^16990497783 is an apocalyptic number.

16990497783 is a deficient number, since it is larger than the sum of its proper divisors (11259105417).

16990497783 is a wasteful number, since it uses less digits than its factorization.

16990497783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940371 (or 1940368 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 16990497783 in words is "sixteen billion, nine hundred ninety million, four hundred ninety-seven thousand, seven hundred eighty-three".