20023262461 has 12 divisors (see below), whose sum is σ = 21154160892. Its totient is φ = 18950039424.

The previous prime is 20023262459. The next prime is 20023262471. The reversal of 20023262461 is 16426232002.

It can be written as a sum of positive squares in 2 ways, for example, as 9500400900 + 10522861561 = 97470^2 + 102581^2 .

It is not a de Polignac number, because 20023262461 - 2¹ = 20023262459 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 (20023262401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332101 + ... + 387733.

It is an arithmetic number, because the mean of its divisors is an integer number (1762846741).

Almost surely, 2^20023262461 is an apocalyptic number.

It is an amenable number.

20023262461 is a deficient number, since it is larger than the sum of its proper divisors (1130898431).

20023262461 is an equidigital number, since it uses as much as digits as its factorization.

20023262461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56668 (or 56649 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20023262461 its reverse (16426232002), we get a palindrome (36449494463).

The spelling of 20023262461 in words is "twenty billion, twenty-three million, two hundred sixty-two thousand, four hundred sixty-one".