1071115516605 has 16 divisors (see below), whose sum is σ = 1714284118080. Its totient is φ = 571095178368.

The previous prime is 1071115516517. The next prime is 1071115516657. The reversal of 1071115516605 is 5066155111701.

It is not a de Polignac number, because 1071115516605 - 2¹⁹ = 1071114992317 is a prime.

It is a super-2 number, since 2×1071115516605² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10348695 + ... + 10451684.

It is an arithmetic number, because the mean of its divisors is an integer number (107142757380).

Almost surely, 2^{1071115516605} is an apocalyptic number.

1071115516605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071115516605 is a deficient number, since it is larger than the sum of its proper divisors (643168601475).

1071115516605 is a wasteful number, since it uses less digits than its factorization.

1071115516605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20803820.

The product of its (nonzero) digits is 31500, while the sum is 39.

The spelling of 1071115516605 in words is "one trillion, seventy-one billion, one hundred fifteen million, five hundred sixteen thousand, six hundred five".