33621046420 has 24 divisors (see below), whose sum is σ = 76035290184. Its totient is φ = 12413924736.

The previous prime is 33621046399. The next prime is 33621046453. The reversal of 33621046420 is 2464012633.

It can be written as a sum of positive squares in 4 ways, for example, as 759333136 + 32861713284 = 27556^2 + 181278^2 .

It is a super-2 number, since 2×33621046420² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 64655599 + ... + 64656118.

It is an arithmetic number, because the mean of its divisors is an integer number (3168137091).

Almost surely, 2^33621046420 is an apocalyptic number.

It is an amenable number.

33621046420 is an abundant number, since it is smaller than the sum of its proper divisors (42414243764).

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

33621046420 is a wasteful number, since it uses less digits than its factorization.

33621046420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129311739 (or 129311737 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 33621046420 in words is "thirty-three billion, six hundred twenty-one million, forty-six thousand, four hundred twenty".