12955773437 has 4 divisors (see below), whose sum is σ = 12956644476. Its totient is φ = 12954902400.

The previous prime is 12955773419. The next prime is 12955773449. The reversal of 12955773437 is 73437755921.

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 9197960836 + 3757812601 = 95906^2 + 61301^2 .

It is a cyclic number.

It is not a de Polignac number, because 12955773437 - 2¹⁰ = 12955772413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955773407) 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, 412814 + ... + 443087.

It is an arithmetic number, because the mean of its divisors is an integer number (3239161119).

Almost surely, 2^12955773437 is an apocalyptic number.

It is an amenable number.

12955773437 is a deficient number, since it is larger than the sum of its proper divisors (871039).

12955773437 is an equidigital number, since it uses as much as digits as its factorization.

12955773437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871038.

The product of its digits is 5556600, while the sum is 53.

The spelling of 12955773437 in words is "twelve billion, nine hundred fifty-five million, seven hundred seventy-three thousand, four hundred thirty-seven".