20562123506 has 8 divisors (see below), whose sum is σ = 30852102144. Its totient is φ = 10278089460.

The previous prime is 20562123503. The next prime is 20562123529. The reversal of 20562123506 is 60532126502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20562123503) 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, 1477490 + ... + 1491341.

It is an arithmetic number, because the mean of its divisors is an integer number (3856512768).

Almost surely, 2^20562123506 is an apocalyptic number.

20562123506 is a deficient number, since it is larger than the sum of its proper divisors (10289978638).

20562123506 is a wasteful number, since it uses less digits than its factorization.

20562123506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972296.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 20562123506 in words is "twenty billion, five hundred sixty-two million, one hundred twenty-three thousand, five hundred six".