11511015061 has 16 divisors (see below), whose sum is σ = 15000781824. Its totient is φ = 8571873024.

The previous prime is 11511015059. The next prime is 11511015071. The reversal of 11511015061 is 16051011511.

It is not a de Polignac number, because 11511015061 - 2¹ = 11511015059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511015031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3718885 + ... + 3721978.

It is an arithmetic number, because the mean of its divisors is an integer number (937548864).

Almost surely, 2^11511015061 is an apocalyptic number.

It is an amenable number.

11511015061 is a deficient number, since it is larger than the sum of its proper divisors (3489766763).

11511015061 is a wasteful number, since it uses less digits than its factorization.

11511015061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7440900.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 11511015061 its reverse (16051011511), we get a palindrome (27562026572).

The spelling of 11511015061 in words is "eleven billion, five hundred eleven million, fifteen thousand, sixty-one".