26698778712 has 40 divisors (see below), whose sum is σ = 74781303300. Its totient is φ = 8899592688.

The previous prime is 26698778699. The next prime is 26698778719. The reversal of 26698778712 is 21787789662.

It is a self number, because there is not a number n which added to its sum of digits gives 26698778712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26698778719) 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 9 ways as a sum of consecutive naturals, for example, 20600262 + ... + 20601557.

Almost surely, 2^26698778712 is an apocalyptic number.

It is an amenable number.

26698778712 is an abundant number, since it is smaller than the sum of its proper divisors (48082524588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26698778712 is a wasteful number, since it uses less digits than its factorization.

26698778712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201837 (or 41201824 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 26698778712 in words is "twenty-six billion, six hundred ninety-eight million, seven hundred seventy-eight thousand, seven hundred twelve".