11156060661 has 16 divisors (see below), whose sum is σ = 15279815808. Its totient is φ = 7234920000.

The previous prime is 11156060633. The next prime is 11156060711. The reversal of 11156060661 is 16606065111.

It is not a de Polignac number, because 11156060661 - 2⁷ = 11156060533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156060561) 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, 1093936 + ... + 1104086.

It is an arithmetic number, because the mean of its divisors is an integer number (954988488).

Almost surely, 2^11156060661 is an apocalyptic number.

It is an amenable number.

11156060661 is a deficient number, since it is larger than the sum of its proper divisors (4123755147).

11156060661 is a wasteful number, since it uses less digits than its factorization.

11156060661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20092.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 11156060661 in words is "eleven billion, one hundred fifty-six million, sixty thousand, six hundred sixty-one".