100561085610550 has 24 divisors (see below), whose sum is σ = 187046561066400. Its totient is φ = 40223801592480.

The previous prime is 100561085610541. The next prime is 100561085610571. The reversal of 100561085610550 is 55016580165001.

It is a happy number.

It is a super-2 number, since 2×100561085610550² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100561085610497 and 100561085610506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12598990 + ... + 18969889.

It is an arithmetic number, because the mean of its divisors is an integer number (7793606711100).

Almost surely, 2^{100561085610550} is an apocalyptic number.

100561085610550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100561085610550 is a deficient number, since it is larger than the sum of its proper divisors (86485475455850).

100561085610550 is a wasteful number, since it uses less digits than its factorization.

100561085610550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31632600 (or 31632595 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 43.

The spelling of 100561085610550 in words is "one hundred trillion, five hundred sixty-one billion, eighty-five million, six hundred ten thousand, five hundred fifty".