1131187196161 has 32 divisors (see below), whose sum is σ = 1355935334400. Its totient is φ = 931535383680.

The previous prime is 1131187196137. The next prime is 1131187196171. The reversal of 1131187196161 is 1616917811311.

It is not a de Polignac number, because 1131187196161 - 2²⁵ = 1131153641729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131187196171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13798485 + ... + 13880221.

It is an arithmetic number, because the mean of its divisors is an integer number (42372979200).

Almost surely, 2^{1131187196161} is an apocalyptic number.

1131187196161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131187196161 is a deficient number, since it is larger than the sum of its proper divisors (224748138239).

1131187196161 is a wasteful number, since it uses less digits than its factorization.

1131187196161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84669.

The product of its digits is 54432, while the sum is 46.

The spelling of 1131187196161 in words is "one trillion, one hundred thirty-one billion, one hundred eighty-seven million, one hundred ninety-six thousand, one hundred sixty-one".