11156653421261 has 8 divisors (see below), whose sum is σ = 11196438252384. Its totient is φ = 11116890954000.

The previous prime is 11156653421189. The next prime is 11156653421299. The reversal of 11156653421261 is 16212435665111.

11156653421261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11156653421261 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 (11156653421561) 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, 4591130 + ... + 6587243.

It is an arithmetic number, because the mean of its divisors is an integer number (1399554781548).

Almost surely, 2^{11156653421261} is an apocalyptic number.

It is an amenable number.

11156653421261 is a deficient number, since it is larger than the sum of its proper divisors (39784831123).

11156653421261 is a wasteful number, since it uses less digits than its factorization.

11156653421261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181931.

The product of its digits is 259200, while the sum is 44.

The spelling of 11156653421261 in words is "eleven trillion, one hundred fifty-six billion, six hundred fifty-three million, four hundred twenty-one thousand, two hundred sixty-one".