26572362109 has 2 divisors, whose sum is σ = 26572362110. Its totient is φ = 26572362108.

The previous prime is 26572362107. The next prime is 26572362133. The reversal of 26572362109 is 90126327562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26218734084 + 353628025 = 161922^2 + 18805^2 .

It is a cyclic number.

It is not a de Polignac number, because 26572362109 - 2¹ = 26572362107 is a prime.

Together with 26572362107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26572362107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13286181054 + 13286181055.

It is an arithmetic number, because the mean of its divisors is an integer number (13286181055).

Almost surely, 2^26572362109 is an apocalyptic number.

It is an amenable number.

26572362109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26572362109 is an equidigital number, since it uses as much as digits as its factorization.

26572362109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 26572362109 in words is "twenty-six billion, five hundred seventy-two million, three hundred sixty-two thousand, one hundred nine".