101243540420056 has 16 divisors (see below), whose sum is σ = 189831753590400. Its totient is φ = 50621739462624.

The previous prime is 101243540420027. The next prime is 101243540420123. The reversal of 101243540420056 is 650024045342101.

It is a junction number, because it is equal to n+sod(n) for n = 101243540419997 and 101243540420024.

It is a congruent 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, 16459785 + ... + 21758023.

It is an arithmetic number, because the mean of its divisors is an integer number (11864484599400).

Almost surely, 2^{101243540420056} is an apocalyptic number.

It is an amenable number.

101243540420056 is a deficient number, since it is larger than the sum of its proper divisors (88588213170344).

101243540420056 is a wasteful number, since it uses less digits than its factorization.

101243540420056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7686858 (or 7686854 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 101243540420056 its reverse (650024045342101), we get a palindrome (751267585762157).

The spelling of 101243540420056 in words is "one hundred one trillion, two hundred forty-three billion, five hundred forty million, four hundred twenty thousand, fifty-six".