236722144681 has 15 divisors (see below), whose sum is σ = 260457516615. Its totient is φ = 215148430200.

The previous prime is 236722144651. The next prime is 236722144691. The reversal of 236722144681 is 186441227632.

The square root of 236722144681 is 486541.

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

It can be written as a sum of positive squares in only one way, i.e., 14032534681 + 222689610000 = 118459^2 + 471900^2 .

It is not a de Polignac number, because 236722144681 - 2⁵ = 236722144649 is a prime.

It is a super-2 number, since 2×236722144681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (774144) is a multiple of the sum of its prime divisors (4032).

It is not an unprimeable number, because it can be changed into a prime (236722144651) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 58869451 + ... + 58873471.

It is an arithmetic number, because the mean of its divisors is an integer number (17363834441).

Almost surely, 2^236722144681 is an apocalyptic number.

236722144681 is the 486541-st square number.

236722144681 is the 243271-st centered octagonal number.

It is an amenable number.

236722144681 is a deficient number, since it is larger than the sum of its proper divisors (23735371934).

236722144681 is an frugal number, since it uses more digits than its factorization.

236722144681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086 (or 4032 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The spelling of 236722144681 in words is "two hundred thirty-six billion, seven hundred twenty-two million, one hundred forty-four thousand, six hundred eighty-one".