158666791248 has 320 divisors, whose sum is σ = 527989777920. Its totient is φ = 44685139968.

The previous prime is 158666791247. The next prime is 158666791253. The reversal of 158666791248 is 842197666851.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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 (158666791247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67316086 + ... + 67318442.

It is an arithmetic number, because the mean of its divisors is an integer number (1649968056).

Almost surely, 2^158666791248 is an apocalyptic number.

158666791248 is a gapful number since it is divisible by the number (18) 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 158666791248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263994888960).

158666791248 is an abundant number, since it is smaller than the sum of its proper divisors (369322986672).

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

158666791248 is a wasteful number, since it uses less digits than its factorization.

158666791248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2679 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 158666791248 in words is "one hundred fifty-eight billion, six hundred sixty-six million, seven hundred ninety-one thousand, two hundred forty-eight".