12354996989 has 2 divisors, whose sum is σ = 12354996990. Its totient is φ = 12354996988.

The previous prime is 12354996977. The next prime is 12354997013. The reversal of 12354996989 is 98969945321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6295152964 + 6059844025 = 79342^2 + 77845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12354996989 is a prime.

It is a super-2 number, since 2×12354996989² (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 (12354996289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177498494 + 6177498495.

It is an arithmetic number, because the mean of its divisors is an integer number (6177498495).

Almost surely, 2^12354996989 is an apocalyptic number.

It is an amenable number.

12354996989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12354996989 is an equidigital number, since it uses as much as digits as its factorization.

12354996989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37791360, while the sum is 65.

The spelling of 12354996989 in words is "twelve billion, three hundred fifty-four million, nine hundred ninety-six thousand, nine hundred eighty-nine".