158585697920 has 128 divisors (see below), whose sum is σ = 429770880000. Its totient is φ = 55472836608.

The previous prime is 158585697899. The next prime is 158585697961. The reversal of 158585697920 is 29796585851.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343520 + ... + 659679.

It is an arithmetic number, because the mean of its divisors is an integer number (3357585000).

Almost surely, 2^158585697920 is an apocalyptic number.

158585697920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158585697920 is an abundant number, since it is smaller than the sum of its proper divisors (271185182080).

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

158585697920 is a wasteful number, since it uses less digits than its factorization.

158585697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003250 (or 1003238 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 65.

The spelling of 158585697920 in words is "one hundred fifty-eight billion, five hundred eighty-five million, six hundred ninety-seven thousand, nine hundred twenty".