20102264653 has 4 divisors (see below), whose sum is σ = 20102651100. Its totient is φ = 20101878208.

The previous prime is 20102264647. The next prime is 20102264701. The reversal of 20102264653 is 35646220102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35646220102 = 2 ⋅17823110051.

It can be written as a sum of positive squares in 2 ways, for example, as 12991896324 + 7110368329 = 113982^2 + 84323^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102264653 - 2⁹ = 20102264141 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 (20102264603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100300 + ... + 224197.

It is an arithmetic number, because the mean of its divisors is an integer number (5025662775).

Almost surely, 2^20102264653 is an apocalyptic number.

It is an amenable number.

20102264653 is a deficient number, since it is larger than the sum of its proper divisors (386447).

20102264653 is an equidigital number, since it uses as much as digits as its factorization.

20102264653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386446.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20102264653 its reverse (35646220102), we get a palindrome (55748484755).

The spelling of 20102264653 in words is "twenty billion, one hundred two million, two hundred sixty-four thousand, six hundred fifty-three".