1170564538991 has 8 divisors (see below), whose sum is σ = 1175309596944. Its totient is φ = 1165820128000.

The previous prime is 1170564538987. The next prime is 1170564539017. The reversal of 1170564538991 is 1998354650711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1170564538991 - 2² = 1170564538987 is a prime.

It is a super-3 number, since 3×1170564538991³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1170564538991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170564538951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3645341 + ... + 3953433.

It is an arithmetic number, because the mean of its divisors is an integer number (146913699618).

Almost surely, 2^{1170564538991} is an apocalyptic number.

1170564538991 is a deficient number, since it is larger than the sum of its proper divisors (4745057953).

1170564538991 is a wasteful number, since it uses less digits than its factorization.

1170564538991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323481.

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 1170564538991 in words is "one trillion, one hundred seventy billion, five hundred sixty-four million, five hundred thirty-eight thousand, nine hundred ninety-one".