1151161101187 has 4 divisors (see below), whose sum is σ = 1151675244160. Its totient is φ = 1150646958216.

The previous prime is 1151161101179. The next prime is 1151161101193. The reversal of 1151161101187 is 7811011611511.

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

It is a cyclic number.

It is not a de Polignac number, because 1151161101187 - 2³ = 1151161101179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151161101127) 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, 257068128 + ... + 257072605.

It is an arithmetic number, because the mean of its divisors is an integer number (287918811040).

Almost surely, 2^{1151161101187} is an apocalyptic number.

1151161101187 is a deficient number, since it is larger than the sum of its proper divisors (514142973).

1151161101187 is an equidigital number, since it uses as much as digits as its factorization.

1151161101187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514142972.

The product of its (nonzero) digits is 1680, while the sum is 34.

Adding to 1151161101187 its reverse (7811011611511), we get a palindrome (8962172712698).

The spelling of 1151161101187 in words is "one trillion, one hundred fifty-one billion, one hundred sixty-one million, one hundred one thousand, one hundred eighty-seven".