33406621313 has 16 divisors (see below), whose sum is σ = 37977233280. Its totient is φ = 29131052544.

The previous prime is 33406621301. The next prime is 33406621343. The reversal of 33406621313 is 31312660433.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33406621313 - 2¹² = 33406617217 is a prime.

It is a super-2 number, since 2×33406621313² (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 33406621313.

It is not an unprimeable number, because it can be changed into a prime (33406621343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104381 + ... + 278762.

It is an arithmetic number, because the mean of its divisors is an integer number (2373577080).

Almost surely, 2^33406621313 is an apocalyptic number.

It is an amenable number.

33406621313 is a deficient number, since it is larger than the sum of its proper divisors (4570611967).

33406621313 is a wasteful number, since it uses less digits than its factorization.

33406621313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383528.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 33406621313 in words is "thirty-three billion, four hundred six million, six hundred twenty-one thousand, three hundred thirteen".