33126557620 has 96 divisors (see below), whose sum is σ = 77034134016. Its totient is φ = 11887948800.

The previous prime is 33126557603. The next prime is 33126557641. The reversal of 33126557620 is 2675562133.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2883127 + ... + 2894593.

It is an arithmetic number, because the mean of its divisors is an integer number (802438896).

Almost surely, 2^33126557620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33126557620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38517067008).

33126557620 is an abundant number, since it is smaller than the sum of its proper divisors (43907576396).

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

33126557620 is a wasteful number, since it uses less digits than its factorization.

33126557620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11801 (or 11799 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 33126557620 in words is "thirty-three billion, one hundred twenty-six million, five hundred fifty-seven thousand, six hundred twenty".