33420234243 has 48 divisors (see below), whose sum is σ = 51626556800. Its totient is φ = 19162915200.

The previous prime is 33420234233. The next prime is 33420234247. The reversal of 33420234243 is 34243202433.

It is a de Polignac number, because none of the positive numbers 2^k-33420234243 is a prime.

It is a super-2 number, since 2×33420234243² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33420234243.

It is not an unprimeable number, because it can be changed into a prime (33420234247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5921703 + ... + 5927343.

Almost surely, 2^33420234243 is an apocalyptic number.

33420234243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

33420234243 is a deficient number, since it is larger than the sum of its proper divisors (18206322557).

33420234243 is a wasteful number, since it uses less digits than its factorization.

33420234243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544 (or 6533 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 33420234243 its reverse (34243202433), we get a palindrome (67663436676).

The spelling of 33420234243 in words is "thirty-three billion, four hundred twenty million, two hundred thirty-four thousand, two hundred forty-three".