11511243061 has 8 divisors (see below), whose sum is σ = 11798835840. Its totient is φ = 11224554432.

The previous prime is 11511243041. The next prime is 11511243071. The reversal of 11511243061 is 16034211511.

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 11511243061 - 2⁷ = 11511242933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511243041) 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, 200221 + ... + 251218.

It is an arithmetic number, because the mean of its divisors is an integer number (1474854480).

Almost surely, 2^11511243061 is an apocalyptic number.

It is an amenable number.

11511243061 is a deficient number, since it is larger than the sum of its proper divisors (287592779).

11511243061 is an equidigital number, since it uses as much as digits as its factorization.

11511243061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452075.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 11511243061 its reverse (16034211511), we get a palindrome (27545454572).

The spelling of 11511243061 in words is "eleven billion, five hundred eleven million, two hundred forty-three thousand, sixty-one".