1157144379891 has 16 divisors (see below), whose sum is σ = 1592677659648. Its totient is φ = 746521869600.

The previous prime is 1157144379841. The next prime is 1157144379893. The reversal of 1157144379891 is 1989734417511.

It is not a de Polignac number, because 1157144379891 - 2⁹ = 1157144379379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157144379893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3176265 + ... + 3521781.

It is an arithmetic number, because the mean of its divisors is an integer number (99542353728).

Almost surely, 2^{1157144379891} is an apocalyptic number.

1157144379891 is a deficient number, since it is larger than the sum of its proper divisors (435533279757).

1157144379891 is a wasteful number, since it uses less digits than its factorization.

1157144379891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381562.

The product of its digits is 7620480, while the sum is 60.

The spelling of 1157144379891 in words is "one trillion, one hundred fifty-seven billion, one hundred forty-four million, three hundred seventy-nine thousand, eight hundred ninety-one".