158209873920 has 1152 divisors, whose sum is σ = 673122078720. Its totient is φ = 34876293120.

The previous prime is 158209873909. The next prime is 158209873961. The reversal of 158209873920 is 29378902851.

158209873920 is a `hidden beast` number, since 1 + 582 + 0 + 9 + 8 + 7 + 39 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 539965294 + ... + 539965586.

It is an arithmetic number, because the mean of its divisors is an integer number (584307360).

Almost surely, 2^158209873920 is an apocalyptic number.

158209873920 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 158209873920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336561039360).

158209873920 is an abundant number, since it is smaller than the sum of its proper divisors (514912204800).

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

158209873920 is an equidigital number, since it uses as much as digits as its factorization.

158209873920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 158209873920 in words is "one hundred fifty-eight billion, two hundred nine million, eight hundred seventy-three thousand, nine hundred twenty".