13433579973 has 64 divisors (see below), whose sum is σ = 22413312000. Its totient is φ = 7880431680.

The previous prime is 13433579947. The next prime is 13433579993. The reversal of 13433579973 is 37997533431.

It is a happy number.

13433579973 is a `hidden beast` number, since 1 + 3 + 433 + 57 + 99 + 73 = 666.

It is not a de Polignac number, because 13433579973 - 2⁸ = 13433579717 is a prime.

It is a super-2 number, since 2×13433579973² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13433579993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2183740 + ... + 2189882.

It is an arithmetic number, because the mean of its divisors is an integer number (350208000).

Almost surely, 2^13433579973 is an apocalyptic number.

It is an amenable number.

13433579973 is a deficient number, since it is larger than the sum of its proper divisors (8979732027).

13433579973 is a wasteful number, since it uses less digits than its factorization.

13433579973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6399 (or 6393 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 54.

The spelling of 13433579973 in words is "thirteen billion, four hundred thirty-three million, five hundred seventy-nine thousand, nine hundred seventy-three".