158118868240 has 40 divisors (see below), whose sum is σ = 367674782040. Its totient is φ = 63239218176.

The previous prime is 158118868217. The next prime is 158118868241. The reversal of 158118868240 is 42868811851.

It can be written as a sum of positive squares in 4 ways, for example, as 846344464 + 157272523776 = 29092^2 + 396576^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (158118868241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500092 + ... + 752548.

It is an arithmetic number, because the mean of its divisors is an integer number (9191869551).

Almost surely, 2^158118868240 is an apocalyptic number.

158118868240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158118868240 is an abundant number, since it is smaller than the sum of its proper divisors (209555913800).

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

158118868240 is a wasteful number, since it uses less digits than its factorization.

158118868240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260299 (or 260293 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 52.

The spelling of 158118868240 in words is "one hundred fifty-eight billion, one hundred eighteen million, eight hundred sixty-eight thousand, two hundred forty".