33868442520 has 320 divisors, whose sum is σ = 126832780800. Its totient is φ = 8035441920.

The previous prime is 33868442459. The next prime is 33868442537. The reversal of 33868442520 is 2524486833.

33868442520 is a `hidden beast` number, since 3 + 3 + 8 + 6 + 84 + 42 + 520 = 666.

It is a super-2 number, since 2×33868442520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1664971 + ... + 1685189.

It is an arithmetic number, because the mean of its divisors is an integer number (396352440).

Almost surely, 2^33868442520 is an apocalyptic number.

33868442520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33868442520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63416390400).

33868442520 is an abundant number, since it is smaller than the sum of its proper divisors (92964338280).

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

33868442520 is a wasteful number, since it uses less digits than its factorization.

33868442520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20300 (or 20287 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 33868442520 in words is "thirty-three billion, eight hundred sixty-eight million, four hundred forty-two thousand, five hundred twenty".