20310506540564 has 24 divisors (see below), whose sum is σ = 35987577280200. Its totient is φ = 10028858556800.

The previous prime is 20310506540507. The next prime is 20310506540609. The reversal of 20310506540564 is 46504560501302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5740193056900 + 14570313483664 = 2395870^2 + 3817108^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64461779 + ... + 64776090.

It is an arithmetic number, because the mean of its divisors is an integer number (1499482386675).

Almost surely, 2^{20310506540564} is an apocalyptic number.

It is an amenable number.

20310506540564 is a deficient number, since it is larger than the sum of its proper divisors (15677070739636).

20310506540564 is a wasteful number, since it uses less digits than its factorization.

20310506540564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129238363 (or 129238361 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 20310506540564 in words is "twenty trillion, three hundred ten billion, five hundred six million, five hundred forty thousand, five hundred sixty-four".