158540087394 has 288 divisors, whose sum is σ = 411091200000. Its totient is φ = 43931631744.

The previous prime is 158540087351. The next prime is 158540087401. The reversal of 158540087394 is 493780045851.

158540087394 is a `hidden beast` number, since 1 + 5 + 8 + 540 + 0 + 8 + 7 + 3 + 94 = 666.

It is a super-2 number, since 2×158540087394² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158540087394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 317715357 + ... + 317715855.

It is an arithmetic number, because the mean of its divisors is an integer number (1427400000).

Almost surely, 2^158540087394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158540087394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205545600000).

158540087394 is an abundant number, since it is smaller than the sum of its proper divisors (252551112606).

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

158540087394 is a wasteful number, since it uses less digits than its factorization.

158540087394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 158540087394 in words is "one hundred fifty-eight billion, five hundred forty million, eighty-seven thousand, three hundred ninety-four".