1555110110099 has 12 divisors (see below), whose sum is σ = 1924498058256. Its totient is φ = 1230416789472.

The previous prime is 1555110110093. The next prime is 1555110110107. The reversal of 1555110110099 is 9900110115551.

It is a de Polignac number, because none of the positive numbers 2^k-1555110110099 is a prime.

It is a super-3 number, since 3×1555110110099³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1555110110093) 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 11 ways as a sum of consecutive naturals, for example, 657272744 + ... + 657275109.

It is an arithmetic number, because the mean of its divisors is an integer number (160374838188).

Almost surely, 2^{1555110110099} is an apocalyptic number.

1555110110099 is a deficient number, since it is larger than the sum of its proper divisors (369387948157).

1555110110099 is a wasteful number, since it uses less digits than its factorization.

1555110110099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314547886 (or 1314547873 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 38.

The spelling of 1555110110099 in words is "one trillion, five hundred fifty-five billion, one hundred ten million, one hundred ten thousand, ninety-nine".