12462732661 has 4 divisors (see below), whose sum is σ = 12493204300. Its totient is φ = 12432261024.

The previous prime is 12462732617. The next prime is 12462732671. The reversal of 12462732661 is 16623726421.

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 7006694436 + 5456038225 = 83706^2 + 73865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12462732661 is a prime.

It is a super-2 number, since 2×12462732661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12462732671) 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, 15235206 + ... + 15236023.

It is an arithmetic number, because the mean of its divisors is an integer number (3123301075).

Almost surely, 2^12462732661 is an apocalyptic number.

It is an amenable number.

12462732661 is a deficient number, since it is larger than the sum of its proper divisors (30471639).

12462732661 is an equidigital number, since it uses as much as digits as its factorization.

12462732661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30471638.

The product of its digits is 145152, while the sum is 40.

The spelling of 12462732661 in words is "twelve billion, four hundred sixty-two million, seven hundred thirty-two thousand, six hundred sixty-one".