20318433134 has 4 divisors (see below), whose sum is σ = 30477649704. Its totient is φ = 10159216566.

The previous prime is 20318433131. The next prime is 20318433259. The reversal of 20318433134 is 43133481302.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20318433134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20318433131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5079608282 + ... + 5079608285.

It is an arithmetic number, because the mean of its divisors is an integer number (7619412426).

Almost surely, 2^20318433134 is an apocalyptic number.

20318433134 is a deficient number, since it is larger than the sum of its proper divisors (10159216570).

20318433134 is a wasteful number, since it uses less digits than its factorization.

20318433134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10159216569.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 20318433134 in words is "twenty billion, three hundred eighteen million, four hundred thirty-three thousand, one hundred thirty-four".