20713878238 has 8 divisors (see below), whose sum is σ = 31597441560. Its totient is φ = 10181397720.

The previous prime is 20713878193. The next prime is 20713878253. The reversal of 20713878238 is 83287831702.

20713878238 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20713878191 and 20713878200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87770553 + ... + 87770788.

It is an arithmetic number, because the mean of its divisors is an integer number (3949680195).

Almost surely, 2^20713878238 is an apocalyptic number.

20713878238 is a deficient number, since it is larger than the sum of its proper divisors (10883563322).

20713878238 is a wasteful number, since it uses less digits than its factorization.

20713878238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175541402.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 20713878238 in words is "twenty billion, seven hundred thirteen million, eight hundred seventy-eight thousand, two hundred thirty-eight".