2115165505042 has 16 divisors (see below), whose sum is σ = 3311455620312. Its totient is φ = 1012320350080.

The previous prime is 2115165505003. The next prime is 2115165505087. The reversal of 2115165505042 is 2405055615112.

It can be written as a sum of positive squares in 4 ways, for example, as 1693274985081 + 421890519961 = 1301259^2 + 649531^2 .

It is a super-2 number, since 2×2115165505042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2115165504992 and 2115165505010.

It is an unprimeable number.

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, 243341893 + ... + 243350584.

Almost surely, 2^{2115165505042} is an apocalyptic number.

2115165505042 is a deficient number, since it is larger than the sum of its proper divisors (1196290115270).

2115165505042 is a wasteful number, since it uses less digits than its factorization.

2115165505042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486692573.

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 2115165505042 in words is "two trillion, one hundred fifteen billion, one hundred sixty-five million, five hundred five thousand, forty-two".