33205906490 has 16 divisors (see below), whose sum is σ = 59791315752. Its totient is φ = 13277766144.

The previous prime is 33205906483. The next prime is 33205906493. The reversal of 33205906490 is 9460950233.

It can be written as a sum of positive squares in 4 ways, for example, as 26023174489 + 7182732001 = 161317^2 + 84751^2 .

It is a super-2 number, since 2×33205906490² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33205906493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544139 + ... + 602078.

Almost surely, 2^33205906490 is an apocalyptic number.

33205906490 is a deficient number, since it is larger than the sum of its proper divisors (26585409262).

33205906490 is a wasteful number, since it uses less digits than its factorization.

33205906490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149121.

The product of its (nonzero) digits is 174960, while the sum is 41.

The spelling of 33205906490 in words is "thirty-three billion, two hundred five million, nine hundred six thousand, four hundred ninety".