118640609280 has 672 divisors, whose sum is σ = 446008006080. Its totient is φ = 30218158080.

The previous prime is 118640609221. The next prime is 118640609293. The reversal of 118640609280 is 82906046811.

118640609280 is a `hidden beast` number, since 1 + 1 + 86 + 406 + 0 + 92 + 80 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 171693735 + ... + 171694425.

It is an arithmetic number, because the mean of its divisors is an integer number (663702390).

Almost surely, 2^118640609280 is an apocalyptic number.

118640609280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118640609280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223004003040).

118640609280 is an abundant number, since it is smaller than the sum of its proper divisors (327367396800).

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

118640609280 is an frugal number, since it uses more digits than its factorization.

118640609280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 118640609280 in words is "one hundred eighteen billion, six hundred forty million, six hundred nine thousand, two hundred eighty".