158534464556209 has 9 divisors (see below), whose sum is σ = 184417744970091. Its totient is φ = 135886608359040.

The previous prime is 158534464556159. The next prime is 158534464556231. The reversal of 158534464556209 is 902655464435851.

It is a happy number.

The square root of 158534464556209 is 12591047.

It is a perfect power (a square), and thus also a powerful number.

158534464556209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 79840533234609 + 78693931321600 = 8935353^2 + 8870960^2 .

It is not a de Polignac number, because 158534464556209 - 2¹³ = 158534464548017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158534464556309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 87237969 + ... + 89036689.

Almost surely, 2^{158534464556209} is an apocalyptic number.

158534464556209 is the 12591047-th square number.

158534464556209 is the 6295524-th centered octagonal number.

It is an amenable number.

158534464556209 is a deficient number, since it is larger than the sum of its proper divisors (25883280413882).

158534464556209 is an frugal number, since it uses more digits than its factorization.

158534464556209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597456 (or 1798728 counting only the distinct ones).

The product of its (nonzero) digits is 622080000, while the sum is 67.

The spelling of 158534464556209 in words is "one hundred fifty-eight trillion, five hundred thirty-four billion, four hundred sixty-four million, five hundred fifty-six thousand, two hundred nine".