158896005642 has 160 divisors (see below), whose sum is σ = 399457396800. Its totient is φ = 46799596800.

The previous prime is 158896005641. The next prime is 158896005649. The reversal of 158896005642 is 246500698851.

158896005642 is a `hidden beast` number, since 1 + 588 + 9 + 6 + 0 + 0 + 56 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (158896005641) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9348792 + ... + 9365772.

It is an arithmetic number, because the mean of its divisors is an integer number (2496608730).

Almost surely, 2^158896005642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158896005642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199728698400).

158896005642 is an abundant number, since it is smaller than the sum of its proper divisors (240561391158).

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

158896005642 is a wasteful number, since it uses less digits than its factorization.

158896005642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17154 (or 17145 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 158896005642 in words is "one hundred fifty-eight billion, eight hundred ninety-six million, five thousand, six hundred forty-two".