12437013977 has 4 divisors (see below), whose sum is σ = 13091593680. Its totient is φ = 11782434276.

The previous prime is 12437013971. The next prime is 12437013989. The reversal of 12437013977 is 77931073421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77931073421 = 113 ⋅689655517.

It is a cyclic number.

It is not a de Polignac number, because 12437013977 - 2⁴ = 12437013961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12437013971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327289823 + ... + 327289860.

It is an arithmetic number, because the mean of its divisors is an integer number (3272898420).

Almost surely, 2^12437013977 is an apocalyptic number.

It is an amenable number.

12437013977 is a deficient number, since it is larger than the sum of its proper divisors (654579703).

12437013977 is an equidigital number, since it uses as much as digits as its factorization.

12437013977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654579702.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 12437013977 in words is "twelve billion, four hundred thirty-seven million, thirteen thousand, nine hundred seventy-seven".