1181117351313 has 12 divisors (see below), whose sum is σ = 1706471839488. Its totient is φ = 787220747640.

The previous prime is 1181117351311. The next prime is 1181117351339. The reversal of 1181117351313 is 3131537111811.

1181117351313 is a `hidden beast` number, since 1 + 18 + 1 + 117 + 3 + 513 + 13 = 666.

It is not a de Polignac number, because 1181117351313 - 2¹ = 1181117351311 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1181117351311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15862453 + ... + 15936738.

It is an arithmetic number, because the mean of its divisors is an integer number (142205986624).

Almost surely, 2^{1181117351313} is an apocalyptic number.

It is an amenable number.

1181117351313 is a deficient number, since it is larger than the sum of its proper divisors (525354488175).

1181117351313 is a wasteful number, since it uses less digits than its factorization.

1181117351313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31803324 (or 31803321 counting only the distinct ones).

The product of its digits is 7560, while the sum is 36.

The spelling of 1181117351313 in words is "one trillion, one hundred eighty-one billion, one hundred seventeen million, three hundred fifty-one thousand, three hundred thirteen".