26796657985 has 8 divisors (see below), whose sum is σ = 32166417960. Its totient is φ = 21430374144.

The previous prime is 26796657977. The next prime is 26796658019. The reversal of 26796657985 is 58975669762.

It can be written as a sum of positive squares in 4 ways, for example, as 17628403984 + 9168254001 = 132772^2 + 95751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26796657985 - 2³ = 26796657977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852042 + ... + 882931.

It is an arithmetic number, because the mean of its divisors is an integer number (4020802245).

Almost surely, 2^26796657985 is an apocalyptic number.

It is an amenable number.

26796657985 is a deficient number, since it is larger than the sum of its proper divisors (5369759975).

26796657985 is a wasteful number, since it uses less digits than its factorization.

26796657985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738067.

The product of its digits is 342921600, while the sum is 70.

The spelling of 26796657985 in words is "twenty-six billion, seven hundred ninety-six million, six hundred fifty-seven thousand, nine hundred eighty-five".