13143439997 has 2 divisors, whose sum is σ = 13143439998. Its totient is φ = 13143439996.

The previous prime is 13143439961. The next prime is 13143440003. The reversal of 13143439997 is 79993434131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12016763641 + 1126676356 = 109621^2 + 33566^2 .

It is a cyclic number.

It is not a de Polignac number, because 13143439997 - 2¹² = 13143435901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13143436997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571719998 + 6571719999.

It is an arithmetic number, because the mean of its divisors is an integer number (6571719999).

Almost surely, 2^13143439997 is an apocalyptic number.

It is an amenable number.

13143439997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13143439997 is an equidigital number, since it uses as much as digits as its factorization.

13143439997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 53.

The spelling of 13143439997 in words is "thirteen billion, one hundred forty-three million, four hundred thirty-nine thousand, nine hundred ninety-seven".