118657928280 has 256 divisors, whose sum is σ = 391595212800. Its totient is φ = 28629849600.

The previous prime is 118657928203. The next prime is 118657928281. The reversal of 118657928280 is 82829756811.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 118657928280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118657928281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46513005 + ... + 46515555.

It is an arithmetic number, because the mean of its divisors is an integer number (1529668800).

Almost surely, 2^118657928280 is an apocalyptic number.

118657928280 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 118657928280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195797606400).

118657928280 is an abundant number, since it is smaller than the sum of its proper divisors (272937284520).

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

118657928280 is a wasteful number, since it uses less digits than its factorization.

118657928280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 118657928280 in words is "one hundred eighteen billion, six hundred fifty-seven million, nine hundred twenty-eight thousand, two hundred eighty".