20339376447 has 8 divisors (see below), whose sum is σ = 29205258544. Its totient is φ = 12516539328.

The previous prime is 20339376433. The next prime is 20339376493. The reversal of 20339376447 is 74467393302.

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

It is not a de Polignac number, because 20339376447 - 2¹⁵ = 20339343679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20339376396 and 20339376405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20339376647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 260761198 + ... + 260761275.

It is an arithmetic number, because the mean of its divisors is an integer number (3650657318).

Almost surely, 2^20339376447 is an apocalyptic number.

20339376447 is a deficient number, since it is larger than the sum of its proper divisors (8865882097).

20339376447 is a wasteful number, since it uses less digits than its factorization.

20339376447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521522489.

The product of its (nonzero) digits is 2286144, while the sum is 48.

The spelling of 20339376447 in words is "twenty billion, three hundred thirty-nine million, three hundred seventy-six thousand, four hundred forty-seven".