12430837981 has 2 divisors, whose sum is σ = 12430837982. Its totient is φ = 12430837980.

The previous prime is 12430837957. The next prime is 12430838033. The reversal of 12430837981 is 18973803421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12378565081 + 52272900 = 111259^2 + 7230^2 .

It is a cyclic number.

It is not a de Polignac number, because 12430837981 - 2¹⁵ = 12430805213 is a prime.

It is a super-2 number, since 2×12430837981² (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 (12430837921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215418990 + 6215418991.

It is an arithmetic number, because the mean of its divisors is an integer number (6215418991).

Almost surely, 2^12430837981 is an apocalyptic number.

It is an amenable number.

12430837981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12430837981 is an equidigital number, since it uses as much as digits as its factorization.

12430837981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 12430837981 in words is "twelve billion, four hundred thirty million, eight hundred thirty-seven thousand, nine hundred eighty-one".