20463853081 has 32 divisors (see below), whose sum is σ = 25021301760. Its totient is φ = 16345872576.

The previous prime is 20463853079. The next prime is 20463853097. The reversal of 20463853081 is 18035836402.

It is a cyclic number.

It is not a de Polignac number, because 20463853081 - 2¹ = 20463853079 is a prime.

It is a super-2 number, since 2×20463853081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20463853031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9025710 + ... + 9027976.

It is an arithmetic number, because the mean of its divisors is an integer number (781915680).

Almost surely, 2^20463853081 is an apocalyptic number.

It is an amenable number.

20463853081 is a deficient number, since it is larger than the sum of its proper divisors (4557448679).

20463853081 is a wasteful number, since it uses less digits than its factorization.

20463853081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 20463853081 in words is "twenty billion, four hundred sixty-three million, eight hundred fifty-three thousand, eighty-one".