33338140618561 has 3 divisors (see below), whose sum is σ = 33338146392481. Its totient is φ = 33338134844642.

The previous prime is 33338140618547. The next prime is 33338140618603. The reversal of 33338140618561 is 16581604183333.

It is a happy number.

The square root of 33338140618561 is 5773919.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 33338140618561 - 2²¹ = 33338138521409 is a prime.

It is a super-2 number, since 2×33338140618561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33338140618499 and 33338140618508.

It is not an unprimeable number, because it can be changed into a prime (33338140618501) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2886960 + ... + 8660878.

Almost surely, 2^{33338140618561} is an apocalyptic number.

33338140618561 is the 5773919-th square number.

33338140618561 is the 2886960-th centered octagonal number.

It is an amenable number.

33338140618561 is a deficient number, since it is larger than the sum of its proper divisors (5773920).

33338140618561 is an frugal number, since it uses more digits than its factorization.

33338140618561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547838 (or 5773919 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 33338140618561 in words is "thirty-three trillion, three hundred thirty-eight billion, one hundred forty million, six hundred eighteen thousand, five hundred sixty-one".