11722245945 has 32 divisors (see below), whose sum is σ = 18840000000. Its totient is φ = 6223785984.

The previous prime is 11722245937. The next prime is 11722245949. The reversal of 11722245945 is 54954222711.

It is a happy number.

It is not a de Polignac number, because 11722245945 - 2³ = 11722245937 is a prime.

It is a super-2 number, since 2×11722245945² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11722245897 and 11722245906.

It is not an unprimeable number, because it can be changed into a prime (11722245949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5863056 + ... + 5865054.

It is an arithmetic number, because the mean of its divisors is an integer number (588750000).

Almost surely, 2^11722245945 is an apocalyptic number.

11722245945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11722245945 is a deficient number, since it is larger than the sum of its proper divisors (7117754055).

11722245945 is a wasteful number, since it uses less digits than its factorization.

11722245945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569.

The product of its digits is 201600, while the sum is 42.

The spelling of 11722245945 in words is "eleven billion, seven hundred twenty-two million, two hundred forty-five thousand, nine hundred forty-five".