4312436661 has 12 divisors (see below), whose sum is σ = 6708234988. Its totient is φ = 2653807104.

The previous prime is 4312436659. The next prime is 4312436749. The reversal of 4312436661 is 1666342134.

It can be written as a sum of positive squares in 2 ways, for example, as 190026225 + 4122410436 = 13785^2 + 64206^2 .

It is not a de Polignac number, because 4312436661 - 2¹ = 4312436659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312436861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18429100 + ... + 18429333.

Almost surely, 2^4312436661 is an apocalyptic number.

It is an amenable number.

4312436661 is a deficient number, since it is larger than the sum of its proper divisors (2395798327).

4312436661 is a wasteful number, since it uses less digits than its factorization.

4312436661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36858452 (or 36858449 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 4312436661 is about 65669.1454261436. The cubic root of 4312436661 is about 1627.6995489640.

Adding to 4312436661 its reverse (1666342134), we get a palindrome (5978778795).

The spelling of 4312436661 in words is "four billion, three hundred twelve million, four hundred thirty-six thousand, six hundred sixty-one".