20005150426564 has 24 divisors (see below), whose sum is σ = 35212700577600. Its totient is φ = 9944383178784.

The previous prime is 20005150426559. The next prime is 20005150426571. The reversal of 20005150426564 is 46562405150002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18361417 + ... + 19420399.

It is an arithmetic number, because the mean of its divisors is an integer number (1467195857400).

Almost surely, 2^{20005150426564} is an apocalyptic number.

It is an amenable number.

20005150426564 is a deficient number, since it is larger than the sum of its proper divisors (15207550151036).

20005150426564 is a wasteful number, since it uses less digits than its factorization.

20005150426564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086459 (or 1086457 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 20005150426564 its reverse (46562405150002), we get a palindrome (66567555576566).

The spelling of 20005150426564 in words is "twenty trillion, five billion, one hundred fifty million, four hundred twenty-six thousand, five hundred sixty-four".