20505231424324 has 12 divisors (see below), whose sum is σ = 37041708379648. Its totient is φ = 9921886173000.

The previous prime is 20505231424273. The next prime is 20505231424331. The reversal of 20505231424324 is 42342413250502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82682384652 + ... + 82682384899.

Almost surely, 2^{20505231424324} is an apocalyptic number.

It is an amenable number.

20505231424324 is a deficient number, since it is larger than the sum of its proper divisors (16536476955324).

20505231424324 is a wasteful number, since it uses less digits than its factorization.

20505231424324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165364769586 (or 165364769584 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 20505231424324 its reverse (42342413250502), we get a palindrome (62847644674826).

It can be divided in two parts, 205052 and 31424324, that added together give a square (31629376 = 5624²).

The spelling of 20505231424324 in words is "twenty trillion, five hundred five billion, two hundred thirty-one million, four hundred twenty-four thousand, three hundred twenty-four".