118535778313 has 4 divisors (see below), whose sum is σ = 118536835840. Its totient is φ = 118534720788.

The previous prime is 118535778259. The next prime is 118535778329. The reversal of 118535778313 is 313877535811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118535778313 is a prime.

It is a super-2 number, since 2×118535778313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118535718313) 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, 337593 + ... + 592486.

It is an arithmetic number, because the mean of its divisors is an integer number (29634208960).

Almost surely, 2^118535778313 is an apocalyptic number.

It is an amenable number.

118535778313 is a deficient number, since it is larger than the sum of its proper divisors (1057527).

118535778313 is an equidigital number, since it uses as much as digits as its factorization.

118535778313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057526.

The product of its digits is 2116800, while the sum is 52.

The spelling of 118535778313 in words is "one hundred eighteen billion, five hundred thirty-five million, seven hundred seventy-eight thousand, three hundred thirteen".