11909560723 has 8 divisors (see below), whose sum is σ = 12164639040. Its totient is φ = 11654552640.

The previous prime is 11909560717. The next prime is 11909560757. The reversal of 11909560723 is 32706590911.

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-11909560723 is a prime.

It is a super-2 number, since 2×11909560723² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11909560723.

It is not an unprimeable number, because it can be changed into a prime (11909560823) 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, 466063 + ... + 490951.

It is an arithmetic number, because the mean of its divisors is an integer number (1520579880).

Almost surely, 2^11909560723 is an apocalyptic number.

11909560723 is a deficient number, since it is larger than the sum of its proper divisors (255078317).

11909560723 is a wasteful number, since it uses less digits than its factorization.

11909560723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35117.

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 11909560723 in words is "eleven billion, nine hundred nine million, five hundred sixty thousand, seven hundred twenty-three".