12345676537 has 2 divisors, whose sum is σ = 12345676538. Its totient is φ = 12345676536.

The previous prime is 12345676513. The next prime is 12345676571. The reversal of 12345676537 is 73567654321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11252117776 + 1093558761 = 106076^2 + 33069^2 .

It is a cyclic number.

It is not a de Polignac number, because 12345676537 - 2¹⁵ = 12345643769 is a prime.

It is not a weakly prime, because it can be changed into another prime (12345676597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172838268 + 6172838269.

It is an arithmetic number, because the mean of its divisors is an integer number (6172838269).

Almost surely, 2^12345676537 is an apocalyptic number.

It is an amenable number.

12345676537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12345676537 is an equidigital number, since it uses as much as digits as its factorization.

12345676537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 49.

The spelling of 12345676537 in words is "twelve billion, three hundred forty-five million, six hundred seventy-six thousand, five hundred thirty-seven".