20860827639 has 8 divisors (see below), whose sum is σ = 27815765760. Its totient is φ = 13906553976.

The previous prime is 20860827599. The next prime is 20860827649. The reversal of 20860827639 is 93672806802.

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

It is not a de Polignac number, because 20860827639 - 2³² = 16565860343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20860827591 and 20860827600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20860827649) 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, 87549 + ... + 222230.

It is an arithmetic number, because the mean of its divisors is an integer number (3476970720).

Almost surely, 2^20860827639 is an apocalyptic number.

20860827639 is a deficient number, since it is larger than the sum of its proper divisors (6954938121).

20860827639 is a wasteful number, since it uses less digits than its factorization.

20860827639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332229.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 20860827639 in words is "twenty billion, eight hundred sixty million, eight hundred twenty-seven thousand, six hundred thirty-nine".