485231215261 has 4 divisors (see below), whose sum is σ = 522556693372. Its totient is φ = 447905737152.

The previous prime is 485231215243. The next prime is 485231215267. The reversal of 485231215261 is 162512132584.

It is a happy number.

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 265920705625 + 219310509636 = 515675^2 + 468306^2 .

It is a cyclic number.

It is not a de Polignac number, because 485231215261 - 2¹¹ = 485231213213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485231215267) 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, 18662739036 + ... + 18662739061.

It is an arithmetic number, because the mean of its divisors is an integer number (130639173343).

Almost surely, 2^485231215261 is an apocalyptic number.

It is an amenable number.

485231215261 is a deficient number, since it is larger than the sum of its proper divisors (37325478111).

485231215261 is a wasteful number, since it uses less digits than its factorization.

485231215261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37325478110.

The product of its digits is 115200, while the sum is 40.

The spelling of 485231215261 in words is "four hundred eighty-five billion, two hundred thirty-one million, two hundred fifteen thousand, two hundred sixty-one".