158865503472 has 960 divisors, whose sum is σ = 570533483520. Its totient is φ = 42245701632.

The previous prime is 158865503471. The next prime is 158865503569. The reversal of 158865503472 is 274305568851.

158865503472 is a `hidden beast` number, since 1 + 5 + 8 + 8 + 65 + 503 + 4 + 72 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158865503471) 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, 604051213 + ... + 604051475.

It is an arithmetic number, because the mean of its divisors is an integer number (594305712).

Almost surely, 2^158865503472 is an apocalyptic number.

158865503472 is a gapful number since it is divisible by the number (12) 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 158865503472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285266741760).

158865503472 is an abundant number, since it is smaller than the sum of its proper divisors (411667980048).

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

158865503472 is a wasteful number, since it uses less digits than its factorization.

158865503472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 158865503472 in words is "one hundred fifty-eight billion, eight hundred sixty-five million, five hundred three thousand, four hundred seventy-two".