33868350021 has 32 divisors (see below), whose sum is σ = 50473640448. Its totient is φ = 20023093440.

The previous prime is 33868349993. The next prime is 33868350053. The reversal of 33868350021 is 12005386833.

It is not a de Polignac number, because 33868350021 - 2²³ = 33859961413 is a prime.

It is a super-2 number, since 2×33868350021² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33868351021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1115970 + ... + 1145916.

It is an arithmetic number, because the mean of its divisors is an integer number (1577301264).

Almost surely, 2^33868350021 is an apocalyptic number.

It is an amenable number.

33868350021 is a deficient number, since it is larger than the sum of its proper divisors (16605290427).

33868350021 is a wasteful number, since it uses less digits than its factorization.

33868350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30801.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 33868350021 in words is "thirty-three billion, eight hundred sixty-eight million, three hundred fifty thousand, twenty-one".