100555105443 has 16 divisors (see below), whose sum is σ = 144392925600. Its totient is φ = 61877447424.

The previous prime is 100555105397. The next prime is 100555105457. The reversal of 100555105443 is 344501555001.

It is not a de Polignac number, because 100555105443 - 2³² = 96260138147 is a prime.

It is a super-2 number, since 2×100555105443² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100555105643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314105 + ... + 1388517.

It is an arithmetic number, because the mean of its divisors is an integer number (9024557850).

Almost surely, 2^100555105443 is an apocalyptic number.

100555105443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100555105443 is a deficient number, since it is larger than the sum of its proper divisors (43837820157).

100555105443 is a wasteful number, since it uses less digits than its factorization.

100555105443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109078.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 100555105443 in words is "one hundred billion, five hundred fifty-five million, one hundred five thousand, four hundred forty-three".