10115561056 has 36 divisors (see below), whose sum is σ = 19990694052. Its totient is φ = 5038631616.

The previous prime is 10115561047. The next prime is 10115561063. The reversal of 10115561056 is 65016551101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2560875 + ... + 2564821.

It is an arithmetic number, because the mean of its divisors is an integer number (555297057).

Almost surely, 2^10115561056 is an apocalyptic number.

10115561056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10115561056 is a deficient number, since it is larger than the sum of its proper divisors (9875132996).

10115561056 is an frugal number, since it uses more digits than its factorization.

10115561056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523 (or 4232 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 10115561056 in words is "ten billion, one hundred fifteen million, five hundred sixty-one thousand, fifty-six".