11151605656 has 8 divisors (see below), whose sum is σ = 20909260620. Its totient is φ = 5575802824.

The previous prime is 11151605599. The next prime is 11151605657. The reversal of 11151605656 is 65650615111.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151605657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696975346 + ... + 696975361.

Almost surely, 2^11151605656 is an apocalyptic number.

It is an amenable number.

11151605656 is a deficient number, since it is larger than the sum of its proper divisors (9757654964).

11151605656 is a wasteful number, since it uses less digits than its factorization.

11151605656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393950713 (or 1393950709 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 11151605656 in words is "eleven billion, one hundred fifty-one million, six hundred five thousand, six hundred fifty-six".