158865791140 has 192 divisors, whose sum is σ = 399969239040. Its totient is φ = 51862187520.

The previous prime is 158865791069. The next prime is 158865791143. The reversal of 158865791140 is 41197568851.

It is not an unprimeable number, because it can be changed into a prime (158865791143) 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, 72906571 + ... + 72908749.

It is an arithmetic number, because the mean of its divisors is an integer number (2083173120).

Almost surely, 2^158865791140 is an apocalyptic number.

158865791140 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 158865791140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199984619520).

158865791140 is an abundant number, since it is smaller than the sum of its proper divisors (241103447900).

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

158865791140 is a wasteful number, since it uses less digits than its factorization.

158865791140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 158865791140 in words is "one hundred fifty-eight billion, eight hundred sixty-five million, seven hundred ninety-one thousand, one hundred forty".