26929658321 has 2 divisors, whose sum is σ = 26929658322. Its totient is φ = 26929658320.

The previous prime is 26929658293. The next prime is 26929658339. The reversal of 26929658321 is 12385692962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26021238721 + 908419600 = 161311^2 + 30140^2 .

It is a cyclic number.

It is not a de Polignac number, because 26929658321 - 2²² = 26925464017 is a prime.

It is not a weakly prime, because it can be changed into another prime (26949658321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13464829160 + 13464829161.

It is an arithmetic number, because the mean of its divisors is an integer number (13464829161).

Almost surely, 2^26929658321 is an apocalyptic number.

It is an amenable number.

26929658321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26929658321 is an equidigital number, since it uses as much as digits as its factorization.

26929658321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 53.

The spelling of 26929658321 in words is "twenty-six billion, nine hundred twenty-nine million, six hundred fifty-eight thousand, three hundred twenty-one".