33540668279 has 4 divisors (see below), whose sum is σ = 35513648784. Its totient is φ = 31567687776.

The previous prime is 33540668269. The next prime is 33540668297. The reversal of 33540668279 is 97286604533.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 33540668279 - 2¹⁶ = 33540602743 is a prime.

It is a super-2 number, since 2×33540668279² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33540668279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33540668269) 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, 986490227 + ... + 986490260.

It is an arithmetic number, because the mean of its divisors is an integer number (8878412196).

Almost surely, 2^33540668279 is an apocalyptic number.

33540668279 is a deficient number, since it is larger than the sum of its proper divisors (1972980505).

33540668279 is a wasteful number, since it uses less digits than its factorization.

33540668279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972980504.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 33540668279 in words is "thirty-three billion, five hundred forty million, six hundred sixty-eight thousand, two hundred seventy-nine".