33681845854 has 4 divisors (see below), whose sum is σ = 50522768784. Its totient is φ = 16840922926.

The previous prime is 33681845849. The next prime is 33681845861. The reversal of 33681845854 is 45854818633.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×33681845854² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33681845795 and 33681845804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8420461462 + ... + 8420461465.

It is an arithmetic number, because the mean of its divisors is an integer number (12630692196).

Almost surely, 2^33681845854 is an apocalyptic number.

33681845854 is a deficient number, since it is larger than the sum of its proper divisors (16840922930).

33681845854 is a wasteful number, since it uses less digits than its factorization.

33681845854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16840922929.

The product of its digits is 11059200, while the sum is 55.

The spelling of 33681845854 in words is "thirty-three billion, six hundred eighty-one million, eight hundred forty-five thousand, eight hundred fifty-four".