100555555551 has 8 divisors (see below), whose sum is σ = 146262626304. Its totient is φ = 60942760920.

The previous prime is 100555555531. The next prime is 100555555561. The reversal of 100555555551 is 155555555001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100555555551 - 2⁵ = 100555555519 is a prime.

It is a super-2 number, since 2×100555555551² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100555555531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1523568991 + ... + 1523569056.

It is an arithmetic number, because the mean of its divisors is an integer number (18282828288).

Almost surely, 2^100555555551 is an apocalyptic number.

100555555551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100555555551 is a deficient number, since it is larger than the sum of its proper divisors (45707070753).

100555555551 is a wasteful number, since it uses less digits than its factorization.

100555555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047138061.

The product of its (nonzero) digits is 390625, while the sum is 42.

The spelling of 100555555551 in words is "one hundred billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-one".