12001522613 has 4 divisors (see below), whose sum is σ = 12523327968. Its totient is φ = 11479717260.

The previous prime is 12001522607. The next prime is 12001522639. The reversal of 12001522613 is 31622510021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12001522613 - 2⁶ = 12001522549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 521805331 = 12001522613 / (1 + 2 + 0 + 0 + 1 + 5 + 2 + 2 + 6 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001522693) 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, 260902643 + ... + 260902688.

It is an arithmetic number, because the mean of its divisors is an integer number (3130831992).

Almost surely, 2^12001522613 is an apocalyptic number.

It is an amenable number.

12001522613 is a deficient number, since it is larger than the sum of its proper divisors (521805355).

12001522613 is an equidigital number, since it uses as much as digits as its factorization.

12001522613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521805354.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 12001522613 in words is "twelve billion, one million, five hundred twenty-two thousand, six hundred thirteen".