158721763201 has 9 divisors (see below), whose sum is σ = 160032396099. Its totient is φ = 157421787264.

The previous prime is 158721763181. The next prime is 158721763237. The reversal of 158721763201 is 102367127851.

The square root of 158721763201 is 398399.

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

158721763201 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., 158519441025 + 202322176 = 398145^2 + 14224^2 .

It is not a de Polignac number, because 158721763201 - 2⁵ = 158721763169 is a prime.

It is a super-2 number, since 2×158721763201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158721763241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50595105 + ... + 50598241.

Almost surely, 2^158721763201 is an apocalyptic number.

158721763201 is the 398399-th square number.

158721763201 is the 199200-th centered octagonal number.

It is an amenable number.

158721763201 is a deficient number, since it is larger than the sum of its proper divisors (1310632898).

158721763201 is an frugal number, since it uses more digits than its factorization.

158721763201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 158721763201 in words is "one hundred fifty-eight billion, seven hundred twenty-one million, seven hundred sixty-three thousand, two hundred one".