33231137945 has 8 divisors (see below), whose sum is σ = 39879641736. Its totient is φ = 26583392896.

The previous prime is 33231137917. The next prime is 33231137999. The reversal of 33231137945 is 54973113233.

It can be written as a sum of positive squares in 4 ways, for example, as 4481900809 + 28749237136 = 66947^2 + 169556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33231137945 - 2¹² = 33231133849 is a prime.

It is a super-2 number, since 2×33231137945² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88412 + ... + 272541.

It is an arithmetic number, because the mean of its divisors is an integer number (4984955217).

Almost surely, 2^33231137945 is an apocalyptic number.

It is an amenable number.

33231137945 is a deficient number, since it is larger than the sum of its proper divisors (6648503791).

33231137945 is a wasteful number, since it uses less digits than its factorization.

33231137945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379371.

The product of its digits is 204120, while the sum is 41.

The spelling of 33231137945 in words is "thirty-three billion, two hundred thirty-one million, one hundred thirty-seven thousand, nine hundred forty-five".