20173049173433 has 16 divisors (see below), whose sum is σ = 21940735553856. Its totient is φ = 18436221278400.

The previous prime is 20173049173427. The next prime is 20173049173489. The reversal of 20173049173433 is 33437194037102.

It is a cyclic number.

It is not a de Polignac number, because 20173049173433 - 2³⁸ = 19898171266489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20173049173423) 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, 36863966 + ... + 37407192.

It is an arithmetic number, because the mean of its divisors is an integer number (1371295972116).

Almost surely, 2^{20173049173433} is an apocalyptic number.

It is an amenable number.

20173049173433 is a deficient number, since it is larger than the sum of its proper divisors (1767686380423).

20173049173433 is a wasteful number, since it uses less digits than its factorization.

20173049173433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571624.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The spelling of 20173049173433 in words is "twenty trillion, one hundred seventy-three billion, forty-nine million, one hundred seventy-three thousand, four hundred thirty-three".