33506401252 has 6 divisors (see below), whose sum is σ = 58636202198. Its totient is φ = 16753200624.

The previous prime is 33506401241. The next prime is 33506401273. The reversal of 33506401252 is 25210460533.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28353171456 + 5153229796 = 168384^2 + 71786^2 .

It is a super-2 number, since 2×33506401252² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4188300153 + ... + 4188300160.

Almost surely, 2^33506401252 is an apocalyptic number.

It is an amenable number.

33506401252 is a deficient number, since it is larger than the sum of its proper divisors (25129800946).

33506401252 is a wasteful number, since it uses less digits than its factorization.

33506401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8376600317 (or 8376600315 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 33506401252 its reverse (25210460533), we get a palindrome (58716861785).

The spelling of 33506401252 in words is "thirty-three billion, five hundred six million, four hundred one thousand, two hundred fifty-two".