158999649705 has 64 divisors (see below), whose sum is σ = 304483818240. Its totient is φ = 78257664000.

The previous prime is 158999649691. The next prime is 158999649713. The reversal of 158999649705 is 507946999851.

It is not a de Polignac number, because 158999649705 - 2⁸ = 158999649449 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 9540630 + ... + 9557280.

It is an arithmetic number, because the mean of its divisors is an integer number (4757559660).

Almost surely, 2^158999649705 is an apocalyptic number.

158999649705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158999649705 is a deficient number, since it is larger than the sum of its proper divisors (145484168535).

158999649705 is a wasteful number, since it uses less digits than its factorization.

158999649705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22119 (or 22113 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 72.

The spelling of 158999649705 in words is "one hundred fifty-eight billion, nine hundred ninety-nine million, six hundred forty-nine thousand, seven hundred five".