33540405326161 has 4 divisors (see below), whose sum is σ = 33542440437924. Its totient is φ = 33538370214400.

The previous prime is 33540405326149. The next prime is 33540405326171. The reversal of 33540405326161 is 16162350404533.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15816179025936 + 17724226300225 = 3976956^2 + 4210015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33540405326161 is a prime.

It is a super-2 number, since 2×33540405326161² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33540405326171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017531160 + ... + 1017564121.

It is an arithmetic number, because the mean of its divisors is an integer number (8385610109481).

Almost surely, 2^{33540405326161} is an apocalyptic number.

It is an amenable number.

33540405326161 is a deficient number, since it is larger than the sum of its proper divisors (2035111763).

33540405326161 is a wasteful number, since it uses less digits than its factorization.

33540405326161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035111762.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 33540405326161 in words is "thirty-three trillion, five hundred forty billion, four hundred five million, three hundred twenty-six thousand, one hundred sixty-one".