20523264061 has 4 divisors (see below), whose sum is σ = 20590115392. Its totient is φ = 20456412732.

The previous prime is 20523264053. The next prime is 20523264077. The reversal of 20523264061 is 16046232502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20523264061 - 2³ = 20523264053 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 (20523264031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33425205 + ... + 33425818.

It is an arithmetic number, because the mean of its divisors is an integer number (5147528848).

Almost surely, 2^20523264061 is an apocalyptic number.

It is an amenable number.

20523264061 is a deficient number, since it is larger than the sum of its proper divisors (66851331).

20523264061 is an equidigital number, since it uses as much as digits as its factorization.

20523264061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66851330.

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

Adding to 20523264061 its reverse (16046232502), we get a palindrome (36569496563).

The spelling of 20523264061 in words is "twenty billion, five hundred twenty-three million, two hundred sixty-four thousand, sixty-one".