16694778264 has 32 divisors (see below), whose sum is σ = 41967547440. Its totient is φ = 5534179200.

The previous prime is 16694778263. The next prime is 16694778283. The reversal of 16694778264 is 46287749661.

It is a junction number, because it is equal to n+sod(n) for n = 16694778198 and 16694778207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16694778263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917247 + ... + 1925934.

Almost surely, 2^16694778264 is an apocalyptic number.

It is an amenable number.

16694778264 is an abundant number, since it is smaller than the sum of its proper divisors (25272769176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16694778264 is a wasteful number, since it uses less digits than its factorization.

16694778264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843371 (or 3843367 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 16694778264 in words is "sixteen billion, six hundred ninety-four million, seven hundred seventy-eight thousand, two hundred sixty-four".