12437376997 has 4 divisors (see below), whose sum is σ = 12445051276. Its totient is φ = 12429702720.

The previous prime is 12437376961. The next prime is 12437377009. The reversal of 12437376997 is 79967373421.

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 9494748481 + 2942628516 = 97441^2 + 54246^2 .

It is a cyclic number.

It is not a de Polignac number, because 12437376997 - 2¹⁹ = 12436852709 is a prime.

It is a super-3 number, since 3×12437376997³ (a number of 31 digits) contains 333 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 (12437376947) 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, 3834708 + ... + 3837949.

It is an arithmetic number, because the mean of its divisors is an integer number (3111262819).

Almost surely, 2^12437376997 is an apocalyptic number.

It is an amenable number.

12437376997 is a deficient number, since it is larger than the sum of its proper divisors (7674279).

12437376997 is an equidigital number, since it uses as much as digits as its factorization.

12437376997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674278.

The product of its digits is 12002256, while the sum is 58.

The spelling of 12437376997 in words is "twelve billion, four hundred thirty-seven million, three hundred seventy-six thousand, nine hundred ninety-seven".