20101563660430 has 96 divisors (see below), whose sum is σ = 42159215383200. Its totient is φ = 6880671608832.

The previous prime is 20101563660403. The next prime is 20101563660511. The reversal of 20101563660430 is 3406636510102.

It is a self number, because there is not a number n which added to its sum of digits gives 20101563660430.

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 47 ways as a sum of consecutive naturals, for example, 1886225662 + ... + 1886236318.

It is an arithmetic number, because the mean of its divisors is an integer number (439158493575).

Almost surely, 2^{20101563660430} is an apocalyptic number.

20101563660430 is an abundant number, since it is smaller than the sum of its proper divisors (22057651722770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101563660430 is a wasteful number, since it uses less digits than its factorization.

20101563660430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16626 (or 16619 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20101563660430 in words is "twenty trillion, one hundred one billion, five hundred sixty-three million, six hundred sixty thousand, four hundred thirty".