26618361297 has 24 divisors (see below), whose sum is σ = 39020999808. Its totient is φ = 16128177120.

The previous prime is 26618361229. The next prime is 26618361299. The reversal of 26618361297 is 79216381662.

It is not a de Polignac number, because 26618361297 - 2⁷ = 26618361169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26618361299) 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 in 23 ways as a sum of consecutive naturals, for example, 1966888 + ... + 1980374.

It is an arithmetic number, because the mean of its divisors is an integer number (1625874992).

Almost surely, 2^26618361297 is an apocalyptic number.

It is an amenable number.

26618361297 is a deficient number, since it is larger than the sum of its proper divisors (12402638511).

26618361297 is a wasteful number, since it uses less digits than its factorization.

26618361297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949 (or 18938 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The spelling of 26618361297 in words is "twenty-six billion, six hundred eighteen million, three hundred sixty-one thousand, two hundred ninety-seven".