158281387992 has 576 divisors, whose sum is σ = 573939475200. Its totient is φ = 38942830080.

The previous prime is 158281387991. The next prime is 158281387997. The reversal of 158281387992 is 299783182851.

158281387992 is a `hidden beast` number, since 15 + 82 + 81 + 387 + 9 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158281387991) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 58383517 + ... + 58386227.

It is an arithmetic number, because the mean of its divisors is an integer number (996422700).

Almost surely, 2^158281387992 is an apocalyptic number.

158281387992 is a gapful number since it is divisible by the number (12) 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 158281387992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286969737600).

158281387992 is an abundant number, since it is smaller than the sum of its proper divisors (415658087208).

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

158281387992 is a wasteful number, since it uses less digits than its factorization.

158281387992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2822 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The spelling of 158281387992 in words is "one hundred fifty-eight billion, two hundred eighty-one million, three hundred eighty-seven thousand, nine hundred ninety-two".