12381777237 has 8 divisors (see below), whose sum is σ = 16707940704. Its totient is φ = 8155065968.

The previous prime is 12381777223. The next prime is 12381777257. The reversal of 12381777237 is 73277718321.

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 12381777237 - 2¹⁶ = 12381711701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381777257) 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, 24862758 + ... + 24863255.

It is an arithmetic number, because the mean of its divisors is an integer number (2088492588).

Almost surely, 2^12381777237 is an apocalyptic number.

It is an amenable number.

12381777237 is a deficient number, since it is larger than the sum of its proper divisors (4326163467).

12381777237 is an equidigital number, since it uses as much as digits as its factorization.

12381777237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49726099.

The product of its digits is 691488, while the sum is 48.

The spelling of 12381777237 in words is "twelve billion, three hundred eighty-one million, seven hundred seventy-seven thousand, two hundred thirty-seven".