158228297809920 has 912 divisors, whose sum is σ = 594716913790272. Its totient is φ = 38684904652800.

The previous prime is 158228297809861. The next prime is 158228297809927. The reversal of 158228297809920 is 29908792822851.

158228297809920 is a `hidden beast` number, since 1 + 5 + 8 + 228 + 297 + 8 + 0 + 99 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158228297809927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23156486824 + ... + 23156493656.

It is an arithmetic number, because the mean of its divisors is an integer number (652101879156).

Almost surely, 2^{158228297809920} is an apocalyptic number.

158228297809920 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 158228297809920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297358456895136).

158228297809920 is an abundant number, since it is smaller than the sum of its proper divisors (436488615980352).

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

158228297809920 is an equidigital number, since it uses as much as digits as its factorization.

158228297809920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044 (or 7007 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 72.

The spelling of 158228297809920 in words is "one hundred fifty-eight trillion, two hundred twenty-eight billion, two hundred ninety-seven million, eight hundred nine thousand, nine hundred twenty".