100043555355 has 16 divisors (see below), whose sum is σ = 177855209760. Its totient is φ = 53356562784.

The previous prime is 100043555329. The next prime is 100043555383. The reversal of 100043555355 is 553555340001.

100043555355 is a `hidden beast` number, since 10 + 0 + 0 + 43 + 5 + 553 + 55 = 666.

It is not a de Polignac number, because 100043555355 - 2²⁰ = 100042506779 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370531552 + ... + 370531821.

It is an arithmetic number, because the mean of its divisors is an integer number (11115950610).

Almost surely, 2^100043555355 is an apocalyptic number.

100043555355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100043555355 is a deficient number, since it is larger than the sum of its proper divisors (77811654405).

100043555355 is an equidigital number, since it uses as much as digits as its factorization.

100043555355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741063387 (or 741063381 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

Adding to 100043555355 its reverse (553555340001), we get a palindrome (653598895356).

The spelling of 100043555355 in words is "one hundred billion, forty-three million, five hundred fifty-five thousand, three hundred fifty-five".