1117703111581 has 4 divisors (see below), whose sum is σ = 1277374984672. Its totient is φ = 958031238492.

The previous prime is 1117703111579. The next prime is 1117703111593. The reversal of 1117703111581 is 1851113077111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1117703111581 - 2¹ = 1117703111579 is a prime.

It is a super-2 number, since 2×1117703111581² (a number of 25 digits) contains 22 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 1117703111581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117703111521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79835936535 + ... + 79835936548.

It is an arithmetic number, because the mean of its divisors is an integer number (319343746168).

Almost surely, 2^{1117703111581} is an apocalyptic number.

It is an amenable number.

1117703111581 is a deficient number, since it is larger than the sum of its proper divisors (159671873091).

1117703111581 is an equidigital number, since it uses as much as digits as its factorization.

1117703111581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159671873090.

The product of its (nonzero) digits is 5880, while the sum is 37.

Adding to 1117703111581 its reverse (1851113077111), we get a palindrome (2968816188692).

The spelling of 1117703111581 in words is "one trillion, one hundred seventeen billion, seven hundred three million, one hundred eleven thousand, five hundred eighty-one".