12637548437 has 2 divisors, whose sum is σ = 12637548438. Its totient is φ = 12637548436.

The previous prime is 12637548401. The next prime is 12637548487. The reversal of 12637548437 is 73484573621.

It is an a-pointer prime, because the next prime (12637548487) can be obtained adding 12637548437 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10655607076 + 1981941361 = 103226^2 + 44519^2 .

It is a cyclic number.

It is not a de Polignac number, because 12637548437 - 2²² = 12633354133 is a prime.

It is a super-2 number, since 2×12637548437² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12637548487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318774218 + 6318774219.

It is an arithmetic number, because the mean of its divisors is an integer number (6318774219).

Almost surely, 2^12637548437 is an apocalyptic number.

It is an amenable number.

12637548437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637548437 is an equidigital number, since it uses as much as digits as its factorization.

12637548437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 50.

The spelling of 12637548437 in words is "twelve billion, six hundred thirty-seven million, five hundred forty-eight thousand, four hundred thirty-seven".