12601347511 has 4 divisors (see below), whose sum is σ = 13007842624. Its totient is φ = 12194852400.

The previous prime is 12601347491. The next prime is 12601347533. The reversal of 12601347511 is 11574310621.

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 12601347511 - 2⁷ = 12601347383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 406495081 = 12601347511 / (1 + 2 + 6 + 0 + 1 + 3 + 4 + 7 + 5 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12601347541) 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, 203247510 + ... + 203247571.

It is an arithmetic number, because the mean of its divisors is an integer number (3251960656).

Almost surely, 2^12601347511 is an apocalyptic number.

12601347511 is a deficient number, since it is larger than the sum of its proper divisors (406495113).

12601347511 is an equidigital number, since it uses as much as digits as its factorization.

12601347511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406495112.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 12601347511 in words is "twelve billion, six hundred one million, three hundred forty-seven thousand, five hundred eleven".