1015155105165 has 12 divisors (see below), whose sum is σ = 1759602182364. Its totient is φ = 541416056064.

The previous prime is 1015155105157. The next prime is 1015155105199. The reversal of 1015155105165 is 5615015515101.

1015155105165 is a `hidden beast` number, since 1 + 0 + 1 + 51 + 551 + 0 + 51 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 395083902249 + 620071202916 = 628557^2 + 787446^2 .

It is not a de Polignac number, because 1015155105165 - 2³ = 1015155105157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11279501124 + ... + 11279501213.

It is an arithmetic number, because the mean of its divisors is an integer number (146633515197).

Almost surely, 2^{1015155105165} is an apocalyptic number.

1015155105165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015155105165 is a deficient number, since it is larger than the sum of its proper divisors (744447077199).

1015155105165 is a wasteful number, since it uses less digits than its factorization.

1015155105165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22559002348 (or 22559002345 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 1015155105165 in words is "one trillion, fifteen billion, one hundred fifty-five million, one hundred five thousand, one hundred sixty-five".