12139243573 has 8 divisors (see below), whose sum is σ = 12347319096. Its totient is φ = 11931460800.

The previous prime is 12139243561. The next prime is 12139243579. The reversal of 12139243573 is 37534293121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 492085489 + 11647158084 = 22183^2 + 107922^2 .

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 12139243573 - 2²¹ = 12137146421 is a prime.

It is a super-2 number, since 2×12139243573² (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 (12139243579) 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, 11283 + ... + 156223.

It is an arithmetic number, because the mean of its divisors is an integer number (1543414887).

Almost surely, 2^12139243573 is an apocalyptic number.

It is an amenable number.

12139243573 is a deficient number, since it is larger than the sum of its proper divisors (208075523).

12139243573 is a wasteful number, since it uses less digits than its factorization.

12139243573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146375.

The product of its digits is 136080, while the sum is 40.

The spelling of 12139243573 in words is "twelve billion, one hundred thirty-nine million, two hundred forty-three thousand, five hundred seventy-three".