20856030827 has 16 divisors (see below), whose sum is σ = 23003397120. Its totient is φ = 18820771200.

The previous prime is 20856030821. The next prime is 20856030841. The reversal of 20856030827 is 72803065802.

It is not a de Polignac number, because 20856030827 - 2¹⁸ = 20855768683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20856030821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6302 + ... + 204332.

It is an arithmetic number, because the mean of its divisors is an integer number (1437712320).

Almost surely, 2^20856030827 is an apocalyptic number.

20856030827 is a deficient number, since it is larger than the sum of its proper divisors (2147366293).

20856030827 is a wasteful number, since it uses less digits than its factorization.

20856030827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198314.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20856030827 in words is "twenty billion, eight hundred fifty-six million, thirty thousand, eight hundred twenty-seven".