11520643015259 has 4 divisors (see below), whose sum is σ = 13166449160304. Its totient is φ = 9874836870216.

The previous prime is 11520643015207. The next prime is 11520643015303. The reversal of 11520643015259 is 95251034602511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11520643015259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11520643015159) 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, 822903072512 + ... + 822903072525.

It is an arithmetic number, because the mean of its divisors is an integer number (3291612290076).

Almost surely, 2^{11520643015259} is an apocalyptic number.

11520643015259 is a deficient number, since it is larger than the sum of its proper divisors (1645806145045).

11520643015259 is an equidigital number, since it uses as much as digits as its factorization.

11520643015259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645806145044.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 11520643015259 in words is "eleven trillion, five hundred twenty billion, six hundred forty-three million, fifteen thousand, two hundred fifty-nine".