20501769238 has 4 divisors (see below), whose sum is σ = 30752653860. Its totient is φ = 10250884618.

The previous prime is 20501769229. The next prime is 20501769257. The reversal of 20501769238 is 83296710502.

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

It is a junction number, because it is equal to n+sod(n) for n = 20501769194 and 20501769203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5125442308 + ... + 5125442311.

It is an arithmetic number, because the mean of its divisors is an integer number (7688163465).

Almost surely, 2^20501769238 is an apocalyptic number.

20501769238 is a deficient number, since it is larger than the sum of its proper divisors (10250884622).

20501769238 is a wasteful number, since it uses less digits than its factorization.

20501769238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250884621.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 20501769238 in words is "twenty billion, five hundred one million, seven hundred sixty-nine thousand, two hundred thirty-eight".