11623772143 has 4 divisors (see below), whose sum is σ = 11637399928. Its totient is φ = 11610144360.

The previous prime is 11623772137. The next prime is 11623772161. The reversal of 11623772143 is 34127732611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11623772143 - 2⁹ = 11623771631 is a prime.

It is a super-2 number, since 2×11623772143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11623772123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812613 + ... + 6814318.

It is an arithmetic number, because the mean of its divisors is an integer number (2909349982).

Almost surely, 2^11623772143 is an apocalyptic number.

11623772143 is a deficient number, since it is larger than the sum of its proper divisors (13627785).

11623772143 is an equidigital number, since it uses as much as digits as its factorization.

11623772143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13627784.

The product of its digits is 42336, while the sum is 37.

The spelling of 11623772143 in words is "eleven billion, six hundred twenty-three million, seven hundred seventy-two thousand, one hundred forty-three".