158129969508 has 144 divisors (see below), whose sum is σ = 459083649024. Its totient is φ = 44956693440.

The previous prime is 158129969507. The next prime is 158129969519. The reversal of 158129969508 is 805969921851.

158129969508 is a `hidden beast` number, since 1 + 58 + 12 + 9 + 9 + 69 + 508 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (158129969507) 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, 49928941 + ... + 49932107.

It is an arithmetic number, because the mean of its divisors is an integer number (3188080896).

Almost surely, 2^158129969508 is an apocalyptic number.

158129969508 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 158129969508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229541824512).

158129969508 is an abundant number, since it is smaller than the sum of its proper divisors (300953679516).

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

158129969508 is a wasteful number, since it uses less digits than its factorization.

158129969508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 63.

The spelling of 158129969508 in words is "one hundred fifty-eight billion, one hundred twenty-nine million, nine hundred sixty-nine thousand, five hundred eight".