16766684425 has 12 divisors (see below), whose sum is σ = 21884936080. Its totient is φ = 12707381520.

The previous prime is 16766684413. The next prime is 16766684471. The reversal of 16766684425 is 52448666761.

It is a happy number.

It is not a de Polignac number, because 16766684425 - 2²³ = 16758295817 is a prime.

It is a super-2 number, since 2×16766684425² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17648667 + ... + 17649616.

Almost surely, 2^16766684425 is an apocalyptic number.

It is an amenable number.

16766684425 is a deficient number, since it is larger than the sum of its proper divisors (5118251655).

16766684425 is a wasteful number, since it uses less digits than its factorization.

16766684425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35298312 (or 35298307 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The spelling of 16766684425 in words is "sixteen billion, seven hundred sixty-six million, six hundred eighty-four thousand, four hundred twenty-five".