33888853021 has 4 divisors (see below), whose sum is σ = 33962047552. Its totient is φ = 33815658492.

The previous prime is 33888852989. The next prime is 33888853027. The reversal of 33888853021 is 12035888833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12035888833 = 61 ⋅197309653.

It is a cyclic number.

It is not a de Polignac number, because 33888853021 - 2⁵ = 33888852989 is a prime.

It is a super-2 number, since 2×33888853021² (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 (33888853027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36596571 + ... + 36597496.

It is an arithmetic number, because the mean of its divisors is an integer number (8490511888).

Almost surely, 2^33888853021 is an apocalyptic number.

It is an amenable number.

33888853021 is a deficient number, since it is larger than the sum of its proper divisors (73194531).

33888853021 is an equidigital number, since it uses as much as digits as its factorization.

33888853021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73194530.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 33888853021 in words is "thirty-three billion, eight hundred eighty-eight million, eight hundred fifty-three thousand, twenty-one".