33940784185 has 24 divisors (see below), whose sum is σ = 51685710336. Its totient is φ = 21157889760.

The previous prime is 33940784153. The next prime is 33940784191. The reversal of 33940784185 is 58148704933.

It is not a de Polignac number, because 33940784185 - 2⁵ = 33940784153 is a prime.

It is a super-2 number, since 2×33940784185² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6294297 + ... + 6299686.

It is an arithmetic number, because the mean of its divisors is an integer number (2153571264).

Almost surely, 2^33940784185 is an apocalyptic number.

33940784185 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33940784185 is a deficient number, since it is larger than the sum of its proper divisors (17744926151).

33940784185 is a wasteful number, since it uses less digits than its factorization.

33940784185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594013 (or 12594006 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 33940784185 in words is "thirty-three billion, nine hundred forty million, seven hundred eighty-four thousand, one hundred eighty-five".