26570649019 has 2 divisors, whose sum is σ = 26570649020. Its totient is φ = 26570649018.

The previous prime is 26570648999. The next prime is 26570649067. The reversal of 26570649019 is 91094607562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26570649019 - 2¹³ = 26570640827 is a prime.

It is a super-2 number, since 2×26570649019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26570649089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13285324509 + 13285324510.

It is an arithmetic number, because the mean of its divisors is an integer number (13285324510).

Almost surely, 2^26570649019 is an apocalyptic number.

26570649019 is a deficient number, since it is larger than the sum of its proper divisors (1).

26570649019 is an equidigital number, since it uses as much as digits as its factorization.

26570649019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 26570649019 in words is "twenty-six billion, five hundred seventy million, six hundred forty-nine thousand, nineteen".