33223432157 has 4 divisors (see below), whose sum is σ = 33678547740. Its totient is φ = 32768316576.

The previous prime is 33223432153. The next prime is 33223432159. The reversal of 33223432157 is 75123432233.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18383563396 + 14839868761 = 135586^2 + 121819^2 .

It is a cyclic number.

It is not a de Polignac number, because 33223432157 - 2² = 33223432153 is a prime.

It is a super-2 number, since 2×33223432157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223432153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227557682 + ... + 227557827.

It is an arithmetic number, because the mean of its divisors is an integer number (8419636935).

Almost surely, 2^33223432157 is an apocalyptic number.

It is an amenable number.

33223432157 is a deficient number, since it is larger than the sum of its proper divisors (455115583).

33223432157 is an equidigital number, since it uses as much as digits as its factorization.

33223432157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455115582.

The product of its digits is 90720, while the sum is 35.

The spelling of 33223432157 in words is "thirty-three billion, two hundred twenty-three million, four hundred thirty-two thousand, one hundred fifty-seven".