33688866872 has 16 divisors (see below), whose sum is σ = 63178765560. Its totient is φ = 16841196064.

The previous prime is 33688866853. The next prime is 33688866877. The reversal of 33688866872 is 27866888633.

It is a super-2 number, since 2×33688866872² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33688866799 and 33688866808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33688866877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360158 + ... + 443949.

Almost surely, 2^33688866872 is an apocalyptic number.

It is an amenable number.

33688866872 is a deficient number, since it is larger than the sum of its proper divisors (29489898688).

33688866872 is a wasteful number, since it uses less digits than its factorization.

33688866872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809350 (or 809346 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 65.

The spelling of 33688866872 in words is "thirty-three billion, six hundred eighty-eight million, eight hundred sixty-six thousand, eight hundred seventy-two".