118731263805 has 256 divisors, whose sum is σ = 268623544320. Its totient is φ = 48327840000.

The previous prime is 118731263801. The next prime is 118731263831. The reversal of 118731263805 is 508362137811.

It is a happy number.

118731263805 is a `hidden beast` number, since 1 + 1 + 8 + 7 + 3 + 1 + 2 + 638 + 0 + 5 = 666.

It is not a de Polignac number, because 118731263805 - 2² = 118731263801 is a prime.

It is a super-2 number, since 2×118731263805² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118731263801) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 158097180 + ... + 158097930.

It is an arithmetic number, because the mean of its divisors is an integer number (1049310720).

Almost surely, 2^118731263805 is an apocalyptic number.

118731263805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118731263805 is an abundant number, since it is smaller than the sum of its proper divisors (149892280515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118731263805 is a wasteful number, since it uses less digits than its factorization.

118731263805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 118731263805 in words is "one hundred eighteen billion, seven hundred thirty-one million, two hundred sixty-three thousand, eight hundred five".