1165560571707 has 144 divisors (see below), whose sum is σ = 1979518238208. Its totient is φ = 607753144320.

The previous prime is 1165560571699. The next prime is 1165560571723. The reversal of 1165560571707 is 7071750655611.

It is not a de Polignac number, because 1165560571707 - 2³ = 1165560571699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1165560571707.

It is not an unprimeable number, because it can be changed into a prime (1165560571207) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 290879098 + ... + 290883104.

It is an arithmetic number, because the mean of its divisors is an integer number (13746654432).

Almost surely, 2^{1165560571707} is an apocalyptic number.

1165560571707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1165560571707 is a deficient number, since it is larger than the sum of its proper divisors (813957666501).

1165560571707 is a wasteful number, since it uses less digits than its factorization.

1165560571707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4242 counting only the distinct ones).

The product of its (nonzero) digits is 1543500, while the sum is 51.

The spelling of 1165560571707 in words is "one trillion, one hundred sixty-five billion, five hundred sixty million, five hundred seventy-one thousand, seven hundred seven".