33623221139 has 2 divisors, whose sum is σ = 33623221140. Its totient is φ = 33623221138.

The previous prime is 33623221109. The next prime is 33623221157. The reversal of 33623221139 is 93112232633.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33623221139 is a prime.

It is a super-2 number, since 2×33623221139² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 33623221099 and 33623221108.

It is not a weakly prime, because it can be changed into another prime (33623221109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16811610569 + 16811610570.

It is an arithmetic number, because the mean of its divisors is an integer number (16811610570).

Almost surely, 2^33623221139 is an apocalyptic number.

33623221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

33623221139 is an equidigital number, since it uses as much as digits as its factorization.

33623221139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The spelling of 33623221139 in words is "thirty-three billion, six hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-nine".