1159105881497 has 4 divisors (see below), whose sum is σ = 1161642218676. Its totient is φ = 1156569544320.

The previous prime is 1159105881473. The next prime is 1159105881499. The reversal of 1159105881497 is 7941885019511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659816668681 + 499289212816 = 812291^2 + 706604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1159105881497 - 2³⁰ = 1158032139673 is a prime.

It is a super-2 number, since 2×1159105881497² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159105881499) 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, 1268167904 + ... + 1268168817.

It is an arithmetic number, because the mean of its divisors is an integer number (290410554669).

Almost surely, 2^{1159105881497} is an apocalyptic number.

It is an amenable number.

1159105881497 is a deficient number, since it is larger than the sum of its proper divisors (2536337179).

1159105881497 is an equidigital number, since it uses as much as digits as its factorization.

1159105881497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536337178.

The product of its (nonzero) digits is 3628800, while the sum is 59.

The spelling of 1159105881497 in words is "one trillion, one hundred fifty-nine billion, one hundred five million, eight hundred eighty-one thousand, four hundred ninety-seven".