33827024021 has 6 divisors (see below), whose sum is σ = 39349803510. Its totient is φ = 28994591976.

The previous prime is 33827024009. The next prime is 33827024051. The reversal of 33827024021 is 12042072833.

It can be written as a sum of positive squares in only one way, i.e., 24099147121 + 9727876900 = 155239^2 + 98630^2 .

It is not a de Polignac number, because 33827024021 - 2²⁶ = 33759915157 is a prime.

It is a super-2 number, since 2×33827024021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33827024051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345173666 + ... + 345173763.

It is an arithmetic number, because the mean of its divisors is an integer number (6558300585).

Almost surely, 2^33827024021 is an apocalyptic number.

It is an amenable number.

33827024021 is a deficient number, since it is larger than the sum of its proper divisors (5522779489).

33827024021 is an equidigital number, since it uses as much as digits as its factorization.

33827024021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690347443 (or 690347436 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 33827024021 its reverse (12042072833), we get a palindrome (45869096854).

The spelling of 33827024021 in words is "thirty-three billion, eight hundred twenty-seven million, twenty-four thousand, twenty-one".