158862585420 has 576 divisors, whose sum is σ = 633183505920. Its totient is φ = 32695488000.

The previous prime is 158862585389. The next prime is 158862585421. The reversal of 158862585420 is 24585268851.

158862585420 is a `hidden beast` number, since 1 + 5 + 8 + 8 + 625 + 8 + 5 + 4 + 2 + 0 = 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 (158862585421) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 31140870 + ... + 31145970.

It is an arithmetic number, because the mean of its divisors is an integer number (1099276920).

Almost surely, 2^158862585420 is an apocalyptic number.

158862585420 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 158862585420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316591752960).

158862585420 is an abundant number, since it is smaller than the sum of its proper divisors (474320920500).

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

158862585420 is a wasteful number, since it uses less digits than its factorization.

158862585420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251 (or 5236 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 54.

The spelling of 158862585420 in words is "one hundred fifty-eight billion, eight hundred sixty-two million, five hundred eighty-five thousand, four hundred twenty".