12642605011 has 4 divisors (see below), whose sum is σ = 12726331024. Its totient is φ = 12558879000.

The previous prime is 12642604973. The next prime is 12642605029. The reversal of 12642605011 is 11050624621.

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

It is a cyclic number.

It is not a de Polignac number, because 12642605011 - 2¹¹ = 12642602963 is a prime.

It is a super-2 number, since 2×12642605011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12642605051) 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, 41862780 + ... + 41863081.

It is an arithmetic number, because the mean of its divisors is an integer number (3181582756).

Almost surely, 2^12642605011 is an apocalyptic number.

12642605011 is a deficient number, since it is larger than the sum of its proper divisors (83726013).

12642605011 is an equidigital number, since it uses as much as digits as its factorization.

12642605011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83726012.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 12642605011 in words is "twelve billion, six hundred forty-two million, six hundred five thousand, eleven".