33689502640397 has 2 divisors, whose sum is σ = 33689502640398. Its totient is φ = 33689502640396.

The previous prime is 33689502640357. The next prime is 33689502640543. The reversal of 33689502640397 is 79304620598633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28843226206921 + 4846276433476 = 5370589^2 + 2201426^2 .

It is a cyclic number.

It is not a de Polignac number, because 33689502640397 - 2⁶ = 33689502640333 is a prime.

It is a super-2 number, since 2×33689502640397² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33689502640357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16844751320198 + 16844751320199.

It is an arithmetic number, because the mean of its divisors is an integer number (16844751320199).

Almost surely, 2^{33689502640397} is an apocalyptic number.

It is an amenable number.

33689502640397 is a deficient number, since it is larger than the sum of its proper divisors (1).

33689502640397 is an equidigital number, since it uses as much as digits as its factorization.

33689502640397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176359680, while the sum is 65.

The spelling of 33689502640397 in words is "thirty-three trillion, six hundred eighty-nine billion, five hundred two million, six hundred forty thousand, three hundred ninety-seven".