11356562161 has 16 divisors (see below), whose sum is σ = 13299729408. Its totient is φ = 9493747200.

The previous prime is 11356562149. The next prime is 11356562167. The reversal of 11356562161 is 16126565311.

It is not a de Polignac number, because 11356562161 - 2¹¹ = 11356560113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11356562161.

It is not an unprimeable number, because it can be changed into a prime (11356562167) 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, 1658601 + ... + 1665433.

It is an arithmetic number, because the mean of its divisors is an integer number (831233088).

Almost surely, 2^11356562161 is an apocalyptic number.

It is an amenable number.

11356562161 is a deficient number, since it is larger than the sum of its proper divisors (1943167247).

11356562161 is an equidigital number, since it uses as much as digits as its factorization.

11356562161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672.

The product of its digits is 32400, while the sum is 37.

The spelling of 11356562161 in words is "eleven billion, three hundred fifty-six million, five hundred sixty-two thousand, one hundred sixty-one".