20432762305 has 4 divisors (see below), whose sum is σ = 24519314772. Its totient is φ = 16346209840.

The previous prime is 20432762293. The next prime is 20432762309. The reversal of 20432762305 is 50326723402.

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 2189397681 + 18243364624 = 46791^2 + 135068^2 .

It is not a de Polignac number, because 20432762305 - 2¹³ = 20432754113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20432762309) 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, 2043276226 + ... + 2043276235.

It is an arithmetic number, because the mean of its divisors is an integer number (6129828693).

Almost surely, 2^20432762305 is an apocalyptic number.

It is an amenable number.

20432762305 is a deficient number, since it is larger than the sum of its proper divisors (4086552467).

20432762305 is an equidigital number, since it uses as much as digits as its factorization.

20432762305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086552466.

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 20432762305 in words is "twenty billion, four hundred thirty-two million, seven hundred sixty-two thousand, three hundred five".