33623221136 has 20 divisors (see below), whose sum is σ = 66249145200. Its totient is φ = 16526667552.

The previous prime is 33623221109. The next prime is 33623221139. The reversal of 33623221136 is 63112232633.

It is a super-2 number, since 2×33623221136² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33623221139) 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, 17807966 + ... + 17809853.

It is an arithmetic number, because the mean of its divisors is an integer number (3312457260).

Almost surely, 2^33623221136 is an apocalyptic number.

It is an amenable number.

33623221136 is a deficient number, since it is larger than the sum of its proper divisors (32625924064).

33623221136 is a wasteful number, since it uses less digits than its factorization.

33623221136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617886 (or 35617880 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

Adding to 33623221136 its reverse (63112232633), we get a palindrome (96735453769).

The spelling of 33623221136 in words is "thirty-three billion, six hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-six".