16878494769 has 16 divisors (see below), whose sum is σ = 23286208320. Its totient is φ = 10861739840.

The previous prime is 16878494767. The next prime is 16878494779. The reversal of 16878494769 is 96749487861.

It is a cyclic number.

It is not a de Polignac number, because 16878494769 - 2¹ = 16878494767 is a prime.

It is a super-3 number, since 3×16878494769³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16878494767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387439 + ... + 428795.

It is an arithmetic number, because the mean of its divisors is an integer number (1455388020).

Almost surely, 2^16878494769 is an apocalyptic number.

It is an amenable number.

16878494769 is a deficient number, since it is larger than the sum of its proper divisors (6407713551).

16878494769 is a wasteful number, since it uses less digits than its factorization.

16878494769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46080.

The product of its digits is 146313216, while the sum is 69.

The spelling of 16878494769 in words is "sixteen billion, eight hundred seventy-eight million, four hundred ninety-four thousand, seven hundred sixty-nine".