33421771764 has 18 divisors (see below), whose sum is σ = 84482812050. Its totient is φ = 11140590576.

The previous prime is 33421771729. The next prime is 33421771777. The reversal of 33421771764 is 46717712433.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31765932900 + 1655838864 = 178230^2 + 40692^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×33421771764² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464191239 + ... + 464191310.

Almost surely, 2^33421771764 is an apocalyptic number.

It is an amenable number.

33421771764 is an abundant number, since it is smaller than the sum of its proper divisors (51061040286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33421771764 is a wasteful number, since it uses less digits than its factorization.

33421771764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928382559 (or 928382554 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The spelling of 33421771764 in words is "thirty-three billion, four hundred twenty-one million, seven hundred seventy-one thousand, seven hundred sixty-four".