13466666788 has 6 divisors (see below), whose sum is σ = 23566666886. Its totient is φ = 6733333392.

The previous prime is 13466666783. The next prime is 13466666789. The reversal of 13466666788 is 88766666431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10724259364 + 2742407424 = 103558^2 + 52368^2 .

It is a super-2 number, since 2×13466666788² (a number of 21 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13466666783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1683333345 + ... + 1683333352.

Almost surely, 2^13466666788 is an apocalyptic number.

It is an amenable number.

13466666788 is a deficient number, since it is larger than the sum of its proper divisors (10100000098).

13466666788 is a wasteful number, since it uses less digits than its factorization.

13466666788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366666701 (or 3366666699 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 61.

The spelling of 13466666788 in words is "thirteen billion, four hundred sixty-six million, six hundred sixty-six thousand, seven hundred eighty-eight".