100555280551 has 16 divisors (see below), whose sum is σ = 118118062080. Its totient is φ = 84578346880.

The previous prime is 100555280549. The next prime is 100555280611. The reversal of 100555280551 is 155082555001.

It is a cyclic number.

It is not a de Polignac number, because 100555280551 - 2¹ = 100555280549 is a prime.

It is a super-2 number, since 2×100555280551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100555280551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100555280851) 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, 4545991 + ... + 4568056.

It is an arithmetic number, because the mean of its divisors is an integer number (7382378880).

Almost surely, 2^100555280551 is an apocalyptic number.

100555280551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100555280551 is a deficient number, since it is larger than the sum of its proper divisors (17562781529).

100555280551 is a wasteful number, since it uses less digits than its factorization.

100555280551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114134.

The product of its (nonzero) digits is 50000, while the sum is 37.

The spelling of 100555280551 in words is "one hundred billion, five hundred fifty-five million, two hundred eighty thousand, five hundred fifty-one".