20853947027 has 16 divisors (see below), whose sum is σ = 22150640640. Its totient is φ = 19592381952.

The previous prime is 20853946969. The next prime is 20853947029. The reversal of 20853947027 is 72074935802.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20853947027 - 2¹⁶ = 20853881491 is a prime.

It is a super-3 number, since 3×20853947027³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20853947029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320948 + ... + 380414.

It is an arithmetic number, because the mean of its divisors is an integer number (1384415040).

Almost surely, 2^20853947027 is an apocalyptic number.

20853947027 is a deficient number, since it is larger than the sum of its proper divisors (1296693613).

20853947027 is a wasteful number, since it uses less digits than its factorization.

20853947027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59762.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 20853947027 in words is "twenty billion, eight hundred fifty-three million, nine hundred forty-seven thousand, twenty-seven".