33890065911 has 24 divisors (see below), whose sum is σ = 53582119136. Its totient is φ = 20513528640.

The previous prime is 33890065897. The next prime is 33890065969. The reversal of 33890065911 is 11956009833.

It is not a de Polignac number, because 33890065911 - 2¹⁵ = 33890033143 is a prime.

It is a super-2 number, since 2×33890065911² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33890055911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2367115 + ... + 2381388.

Almost surely, 2^33890065911 is an apocalyptic number.

33890065911 is a deficient number, since it is larger than the sum of its proper divisors (19692053225).

33890065911 is a wasteful number, since it uses less digits than its factorization.

33890065911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748583 (or 4748580 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 33890065911 in words is "thirty-three billion, eight hundred ninety million, sixty-five thousand, nine hundred eleven".