20006153653 has 4 divisors (see below), whose sum is σ = 20007593740. Its totient is φ = 20004713568.

The previous prime is 20006153623. The next prime is 20006153677. The reversal of 20006153653 is 35635160002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3478994289 + 16527159364 = 58983^2 + 128558^2 .

It is a cyclic number.

It is not a de Polignac number, because 20006153653 - 2²⁵ = 19972599221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006153623) 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 3 ways as a sum of consecutive naturals, for example, 699000 + ... + 727057.

It is an arithmetic number, because the mean of its divisors is an integer number (5001898435).

Almost surely, 2^20006153653 is an apocalyptic number.

It is an amenable number.

20006153653 is a deficient number, since it is larger than the sum of its proper divisors (1440087).

20006153653 is a wasteful number, since it uses less digits than its factorization.

20006153653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440086.

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 20006153653 in words is "twenty billion, six million, one hundred fifty-three thousand, six hundred fifty-three".