158663866368 has 384 divisors, whose sum is σ = 503369717760. Its totient is φ = 43501486080.

The previous prime is 158663866367. The next prime is 158663866397. The reversal of 158663866368 is 863668366851.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×158663866368² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 158663866299 and 158663866308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158663866367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107132188 + ... + 107133668.

It is an arithmetic number, because the mean of its divisors is an integer number (1310858640).

Almost surely, 2^158663866368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158663866368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251684858880).

158663866368 is an abundant number, since it is smaller than the sum of its proper divisors (344705851392).

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

158663866368 is a wasteful number, since it uses less digits than its factorization.

158663866368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1593 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 66.

The spelling of 158663866368 in words is "one hundred fifty-eight billion, six hundred sixty-three million, eight hundred sixty-six thousand, three hundred sixty-eight".