20038738423291 has 8 divisors (see below), whose sum is σ = 23009952856064. Its totient is φ = 17094658369320.

The previous prime is 20038738423283. The next prime is 20038738423307. The reversal of 20038738423291 is 19232483783002.

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

It is not a de Polignac number, because 20038738423291 - 2³ = 20038738423283 is a prime.

It is a super-5 number, since 5×20038738423291⁵ (a number of 68 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20038738423091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6783593115 + ... + 6783596068.

It is an arithmetic number, because the mean of its divisors is an integer number (2876244107008).

Almost surely, 2^{20038738423291} is an apocalyptic number.

20038738423291 is a deficient number, since it is larger than the sum of its proper divisors (2971214432773).

20038738423291 is a wasteful number, since it uses less digits than its factorization.

20038738423291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13567189401.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 20038738423291 in words is "twenty trillion, thirty-eight billion, seven hundred thirty-eight million, four hundred twenty-three thousand, two hundred ninety-one".