33142231909 has 2 divisors, whose sum is σ = 33142231910. Its totient is φ = 33142231908.

The previous prime is 33142231877. The next prime is 33142231931. The reversal of 33142231909 is 90913224133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23753590884 + 9388641025 = 154122^2 + 96895^2 .

It is a cyclic number.

It is not a de Polignac number, because 33142231909 - 2⁵ = 33142231877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33142231009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16571115954 + 16571115955.

It is an arithmetic number, because the mean of its divisors is an integer number (16571115955).

Almost surely, 2^33142231909 is an apocalyptic number.

It is an amenable number.

33142231909 is a deficient number, since it is larger than the sum of its proper divisors (1).

33142231909 is an equidigital number, since it uses as much as digits as its factorization.

33142231909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 33142231909 in words is "thirty-three billion, one hundred forty-two million, two hundred thirty-one thousand, nine hundred nine".