11511345563 has 8 divisors (see below), whose sum is σ = 11702368560. Its totient is φ = 11320397280.

The previous prime is 11511345553. The next prime is 11511345569. The reversal of 11511345563 is 36554311511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11511345563 - 2⁶ = 11511345499 is a prime.

It is a super-2 number, since 2×11511345563² (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 (11511345569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352628 + ... + 383886.

It is an arithmetic number, because the mean of its divisors is an integer number (1462796070).

Almost surely, 2^11511345563 is an apocalyptic number.

11511345563 is a deficient number, since it is larger than the sum of its proper divisors (191022997).

11511345563 is an equidigital number, since it uses as much as digits as its factorization.

11511345563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37357.

The product of its digits is 27000, while the sum is 35.

The spelling of 11511345563 in words is "eleven billion, five hundred eleven million, three hundred forty-five thousand, five hundred sixty-three".