11915578723 has 8 divisors (see below), whose sum is σ = 12130344000. Its totient is φ = 11702611008.

The previous prime is 11915578721. The next prime is 11915578771. The reversal of 11915578723 is 32787551911.

11915578723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11915578723 - 2¹ = 11915578721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11915578721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436011 + ... + 462532.

It is an arithmetic number, because the mean of its divisors is an integer number (1516293000).

Almost surely, 2^11915578723 is an apocalyptic number.

11915578723 is a deficient number, since it is larger than the sum of its proper divisors (214765277).

11915578723 is an equidigital number, since it uses as much as digits as its factorization.

11915578723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898781.

The product of its digits is 529200, while the sum is 49.

The spelling of 11915578723 in words is "eleven billion, nine hundred fifteen million, five hundred seventy-eight thousand, seven hundred twenty-three".