1163171637513 has 10 divisors (see below), whose sum is σ = 1737577384554. Its totient is φ = 775447758288.

The previous prime is 1163171637487. The next prime is 1163171637553. The reversal of 1163171637513 is 3157361713611.

1163171637513 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 1 + 7 + 1 + 637 + 5 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 776781347904 + 386390289609 = 881352^2 + 621603^2 .

It is not a de Polignac number, because 1163171637513 - 2¹⁰ = 1163171636489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163171637553) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 7180071756 + ... + 7180071917.

Almost surely, 2^{1163171637513} is an apocalyptic number.

It is an amenable number.

1163171637513 is a deficient number, since it is larger than the sum of its proper divisors (574405747041).

1163171637513 is an equidigital number, since it uses as much as digits as its factorization.

1163171637513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14360143685 (or 14360143676 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The spelling of 1163171637513 in words is "one trillion, one hundred sixty-three billion, one hundred seventy-one million, six hundred thirty-seven thousand, five hundred thirteen".