33144040439689 has 2 divisors, whose sum is σ = 33144040439690. Its totient is φ = 33144040439688.

The previous prime is 33144040439677. The next prime is 33144040439711. The reversal of 33144040439689 is 98693404044133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29098040947600 + 4045999492089 = 5394260^2 + 2011467^2 .

It is an emirp because it is prime and its reverse (98693404044133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33144040439689 - 2⁷ = 33144040439561 is a prime.

It is not a weakly prime, because it can be changed into another prime (33144040439189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572020219844 + 16572020219845.

It is an arithmetic number, because the mean of its divisors is an integer number (16572020219845).

Almost surely, 2^{33144040439689} is an apocalyptic number.

It is an amenable number.

33144040439689 is a deficient number, since it is larger than the sum of its proper divisors (1).

33144040439689 is an equidigital number, since it uses as much as digits as its factorization.

33144040439689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26873856, while the sum is 58.

The spelling of 33144040439689 in words is "thirty-three trillion, one hundred forty-four billion, forty million, four hundred thirty-nine thousand, six hundred eighty-nine".