26699051816 has 16 divisors (see below), whose sum is σ = 51675584640. Its totient is φ = 12918895920.

The previous prime is 26699051791. The next prime is 26699051833. The reversal of 26699051816 is 61815099662.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53828486 + ... + 53828981.

It is an arithmetic number, because the mean of its divisors is an integer number (3229724040).

Almost surely, 2^26699051816 is an apocalyptic number.

It is an amenable number.

26699051816 is a deficient number, since it is larger than the sum of its proper divisors (24976532824).

26699051816 is a wasteful number, since it uses less digits than its factorization.

26699051816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107657504 (or 107657500 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 26699051816 in words is "twenty-six billion, six hundred ninety-nine million, fifty-one thousand, eight hundred sixteen".