20675364238 has 4 divisors (see below), whose sum is σ = 31013046360. Its totient is φ = 10337682118.

The previous prime is 20675364233. The next prime is 20675364253. The reversal of 20675364238 is 83246357602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675364233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5168841058 + ... + 5168841061.

It is an arithmetic number, because the mean of its divisors is an integer number (7753261590).

Almost surely, 2^20675364238 is an apocalyptic number.

20675364238 is a deficient number, since it is larger than the sum of its proper divisors (10337682122).

20675364238 is a wasteful number, since it uses less digits than its factorization.

20675364238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337682121.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 20675364238 in words is "twenty billion, six hundred seventy-five million, three hundred sixty-four thousand, two hundred thirty-eight".