26666689358 has 16 divisors (see below), whose sum is σ = 41085472320. Its totient is φ = 12971608416.

The previous prime is 26666689333. The next prime is 26666689409. The reversal of 26666689358 is 85398666662.

It is a super-2 number, since 2×26666689358² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26666689294 and 26666689303.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1243148 + ... + 1264416.

It is an arithmetic number, because the mean of its divisors is an integer number (2567842020).

Almost surely, 2^26666689358 is an apocalyptic number.

26666689358 is a deficient number, since it is larger than the sum of its proper divisors (14418782962).

26666689358 is a wasteful number, since it uses less digits than its factorization.

26666689358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38251.

The product of its digits is 134369280, while the sum is 65.

The spelling of 26666689358 in words is "twenty-six billion, six hundred sixty-six million, six hundred eighty-nine thousand, three hundred fifty-eight".