20947027146 has 16 divisors (see below), whose sum is σ = 41896008000. Its totient is φ = 6982016768.

The previous prime is 20947027117. The next prime is 20947027151. The reversal of 20947027146 is 64172074902.

It is a junction number, because it is equal to n+sod(n) for n = 20947027098 and 20947027107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83755 + ... + 221153.

It is an arithmetic number, because the mean of its divisors is an integer number (2618500500).

Almost surely, 2^20947027146 is an apocalyptic number.

20947027146 is an abundant number, since it is smaller than the sum of its proper divisors (20948980854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20947027146 is a wasteful number, since it uses less digits than its factorization.

20947027146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162813.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 20947027146 in words is "twenty billion, nine hundred forty-seven million, twenty-seven thousand, one hundred forty-six".