33775133968 has 20 divisors (see below), whose sum is σ = 67695851340. Its totient is φ = 16305236864.

The previous prime is 33775133947. The next prime is 33775133969. The reversal of 33775133968 is 86933157733.

It can be written as a sum of positive squares in 2 ways, for example, as 18027895824 + 15747238144 = 134268^2 + 125488^2 .

It is a super-2 number, since 2×33775133968² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33775133969) 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, 36395155 + ... + 36396082.

It is an arithmetic number, because the mean of its divisors is an integer number (3384792567).

Almost surely, 2^33775133968 is an apocalyptic number.

It is an amenable number.

33775133968 is an abundant number, since it is smaller than the sum of its proper divisors (33920717372).

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

33775133968 is a wasteful number, since it uses less digits than its factorization.

33775133968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72791274 (or 72791268 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 55.

The spelling of 33775133968 in words is "thirty-three billion, seven hundred seventy-five million, one hundred thirty-three thousand, nine hundred sixty-eight".