100561551555610 has 16 divisors (see below), whose sum is σ = 181011151256832. Its totient is φ = 40224540965200.

The previous prime is 100561551555607. The next prime is 100561551555623. The reversal of 100561551555610 is 16555155165001.

It is a happy number.

It is a super-2 number, since 2×100561551555610² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4513186 + ... + 14882605.

It is an arithmetic number, because the mean of its divisors is an integer number (11313196953552).

Almost surely, 2^{100561551555610} is an apocalyptic number.

100561551555610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100561551555610 is a deficient number, since it is larger than the sum of its proper divisors (80449599701222).

100561551555610 is a wasteful number, since it uses less digits than its factorization.

100561551555610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19914269.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 100561551555610 in words is "one hundred trillion, five hundred sixty-one billion, five hundred fifty-one million, five hundred fifty-five thousand, six hundred ten".