11211775723 has 32 divisors (see below), whose sum is σ = 12268972800. Its totient is φ = 10206188544.

The previous prime is 11211775717. The next prime is 11211775727. The reversal of 11211775723 is 32757711211.

It is a happy number.

It is not a de Polignac number, because 11211775723 - 2¹³ = 11211767531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211775727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19099836 + ... + 19100422.

It is an arithmetic number, because the mean of its divisors is an integer number (383405400).

Almost surely, 2^11211775723 is an apocalyptic number.

11211775723 is a deficient number, since it is larger than the sum of its proper divisors (1057197077).

11211775723 is a wasteful number, since it uses less digits than its factorization.

11211775723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 20580, while the sum is 37.

The spelling of 11211775723 in words is "eleven billion, two hundred eleven million, seven hundred seventy-five thousand, seven hundred twenty-three".