26700993693 has 24 divisors (see below), whose sum is σ = 42191547840. Its totient is φ = 16137322560.

The previous prime is 26700993689. The next prime is 26700993707. The reversal of 26700993693 is 39639900762.

It is a happy number.

It is not a de Polignac number, because 26700993693 - 2² = 26700993689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26700993623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340096 + ... + 411177.

It is an arithmetic number, because the mean of its divisors is an integer number (1757981160).

Almost surely, 2^26700993693 is an apocalyptic number.

It is an amenable number.

26700993693 is a deficient number, since it is larger than the sum of its proper divisors (15490554147).

26700993693 is a wasteful number, since it uses less digits than its factorization.

26700993693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751649 (or 751646 counting only the distinct ones).

The product of its (nonzero) digits is 3306744, while the sum is 54.

The spelling of 26700993693 in words is "twenty-six billion, seven hundred million, nine hundred ninety-three thousand, six hundred ninety-three".