11406622561 has 4 divisors (see below), whose sum is σ = 11411435824. Its totient is φ = 11401809300.

The previous prime is 11406622547. The next prime is 11406622613. The reversal of 11406622561 is 16522660411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11406622561 - 2¹¹ = 11406620513 is a prime.

It is a super-2 number, since 2×11406622561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11406622511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2403075 + ... + 2407816.

It is an arithmetic number, because the mean of its divisors is an integer number (2852858956).

Almost surely, 2^11406622561 is an apocalyptic number.

It is an amenable number.

11406622561 is a deficient number, since it is larger than the sum of its proper divisors (4813263).

11406622561 is an equidigital number, since it uses as much as digits as its factorization.

11406622561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813262.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 11406622561 in words is "eleven billion, four hundred six million, six hundred twenty-two thousand, five hundred sixty-one".