11722565745 has 96 divisors (see below), whose sum is σ = 23321001600. Its totient is φ = 5394278400.

The previous prime is 11722565719. The next prime is 11722565759. The reversal of 11722565745 is 54756522711.

11722565745 is a `hidden beast` number, since 1 + 1 + 7 + 22 + 56 + 574 + 5 = 666.

It is not a de Polignac number, because 11722565745 - 2⁶ = 11722565681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11722565745.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 840025 + ... + 853865.

It is an arithmetic number, because the mean of its divisors is an integer number (242927100).

Almost surely, 2^11722565745 is an apocalyptic number.

11722565745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11722565745 is a deficient number, since it is larger than the sum of its proper divisors (11598435855).

11722565745 is a wasteful number, since it uses less digits than its factorization.

11722565745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951 (or 13948 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The spelling of 11722565745 in words is "eleven billion, seven hundred twenty-two million, five hundred sixty-five thousand, seven hundred forty-five".