236561039413 has 4 divisors (see below), whose sum is σ = 236604522348. Its totient is φ = 236517556480.

The previous prime is 236561039411. The next prime is 236561039443. The reversal of 236561039413 is 314930165632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66122522449 + 170438516964 = 257143^2 + 412842^2 .

It is a cyclic number.

It is not a de Polignac number, because 236561039413 - 2¹ = 236561039411 is a prime.

It is a super-2 number, since 2×236561039413² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 236561039413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236561039411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21733306 + ... + 21744187.

It is an arithmetic number, because the mean of its divisors is an integer number (59151130587).

Almost surely, 2^236561039413 is an apocalyptic number.

It is an amenable number.

236561039413 is a deficient number, since it is larger than the sum of its proper divisors (43482935).

236561039413 is an equidigital number, since it uses as much as digits as its factorization.

236561039413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43482934.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 236561039413 in words is "two hundred thirty-six billion, five hundred sixty-one million, thirty-nine thousand, four hundred thirteen".