20738679538 has 8 divisors (see below), whose sum is σ = 31546160640. Its totient is φ = 10223292660.

The previous prime is 20738679529. The next prime is 20738679541. The reversal of 20738679538 is 83597683702.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73023378 + ... + 73023661.

It is an arithmetic number, because the mean of its divisors is an integer number (3943270080).

Almost surely, 2^20738679538 is an apocalyptic number.

20738679538 is a deficient number, since it is larger than the sum of its proper divisors (10807481102).

20738679538 is a wasteful number, since it uses less digits than its factorization.

20738679538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146047112.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 20738679538 in words is "twenty billion, seven hundred thirty-eight million, six hundred seventy-nine thousand, five hundred thirty-eight".