11061156564 has 36 divisors (see below), whose sum is σ = 27979084224. Its totient is φ = 3684554832.

The previous prime is 11061156541. The next prime is 11061156571. The reversal of 11061156564 is 46565116011.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49782 + ... + 156845.

It is an arithmetic number, because the mean of its divisors is an integer number (777196784).

Almost surely, 2^11061156564 is an apocalyptic number.

It is an amenable number.

11061156564 is an abundant number, since it is smaller than the sum of its proper divisors (16917927660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11061156564 is a wasteful number, since it uses less digits than its factorization.

11061156564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208124 (or 208119 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 11061156564 in words is "eleven billion, sixty-one million, one hundred fifty-six thousand, five hundred sixty-four".