105115515555 has 16 divisors (see below), whose sum is σ = 168196723200. Its totient is φ = 56057642208.

The previous prime is 105115515551. The next prime is 105115515581. The reversal of 105115515555 is 555515511501.

It is not a de Polignac number, because 105115515555 - 2² = 105115515551 is a prime.

It is a super-2 number, since 2×105115515555² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105115515551) 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, 22155 + ... + 459044.

It is an arithmetic number, because the mean of its divisors is an integer number (10512295200).

Almost surely, 2^105115515555 is an apocalyptic number.

105115515555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105115515555 is a deficient number, since it is larger than the sum of its proper divisors (63081207645).

105115515555 is a wasteful number, since it uses less digits than its factorization.

105115515555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495770.

The product of its (nonzero) digits is 78125, while the sum is 39.

The spelling of 105115515555 in words is "one hundred five billion, one hundred fifteen million, five hundred fifteen thousand, five hundred fifty-five".