12789234156001 has 4 divisors (see below), whose sum is σ = 12790615739652. Its totient is φ = 12787852572352.

The previous prime is 12789234155837. The next prime is 12789234156037. The reversal of 12789234156001 is 10065143298721.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 603542534400 + 12185691621601 = 776880^2 + 3490801^2 .

It is a cyclic number.

It is not a de Polignac number, because 12789234156001 - 2¹⁷ = 12789234024929 is a prime.

It is a super-2 number, since 2×12789234156001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12789234456001) 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, 690777940 + ... + 690796453.

It is an arithmetic number, because the mean of its divisors is an integer number (3197653934913).

It is a 1-persistent number, because it is pandigital, but 2⋅12789234156001 = 25578468312002 is not.

Almost surely, 2^{12789234156001} is an apocalyptic number.

It is an amenable number.

12789234156001 is a deficient number, since it is larger than the sum of its proper divisors (1381583651).

12789234156001 is an equidigital number, since it uses as much as digits as its factorization.

12789234156001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381583650.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 12789234156001 in words is "twelve trillion, seven hundred eighty-nine billion, two hundred thirty-four million, one hundred fifty-six thousand, one".