12601611527 has 4 divisors (see below), whose sum is σ = 12602170200. Its totient is φ = 12601052856.

The previous prime is 12601611521. The next prime is 12601611553. The reversal of 12601611527 is 72511610621.

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 12601611527 - 2⁸ = 12601611271 is a prime.

It is a super-2 number, since 2×12601611527² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12601611493 and 12601611502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12601611521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244013 + ... + 291110.

It is an arithmetic number, because the mean of its divisors is an integer number (3150542550).

Almost surely, 2^12601611527 is an apocalyptic number.

12601611527 is a deficient number, since it is larger than the sum of its proper divisors (558673).

12601611527 is an equidigital number, since it uses as much as digits as its factorization.

12601611527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558672.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 12601611527 in words is "twelve billion, six hundred one million, six hundred eleven thousand, five hundred twenty-seven".