26430643712929 has 2 divisors, whose sum is σ = 26430643712930. Its totient is φ = 26430643712928.

The previous prime is 26430643712909. The next prime is 26430643712951. The reversal of 26430643712929 is 92921734603462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25813512490000 + 617131222929 = 5080700^2 + 785577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26430643712929 is a prime.

It is not a weakly prime, because it can be changed into another prime (26430643712909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13215321856464 + 13215321856465.

It is an arithmetic number, because the mean of its divisors is an integer number (13215321856465).

Almost surely, 2^{26430643712929} is an apocalyptic number.

It is an amenable number.

26430643712929 is a deficient number, since it is larger than the sum of its proper divisors (1).

26430643712929 is an equidigital number, since it uses as much as digits as its factorization.

26430643712929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 58.

The spelling of 26430643712929 in words is "twenty-six trillion, four hundred thirty billion, six hundred forty-three million, seven hundred twelve thousand, nine hundred twenty-nine".