26501256916 has 48 divisors (see below), whose sum is σ = 47891075904. Its totient is φ = 12826699776.

The previous prime is 26501256911. The next prime is 26501256917. The reversal of 26501256916 is 61965210562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26501256911) 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 15 ways as a sum of consecutive naturals, for example, 4290006 + ... + 4296178.

It is an arithmetic number, because the mean of its divisors is an integer number (997730748).

Almost surely, 2^26501256916 is an apocalyptic number.

It is an amenable number.

26501256916 is a deficient number, since it is larger than the sum of its proper divisors (21389818988).

26501256916 is a wasteful number, since it uses less digits than its factorization.

26501256916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520 (or 6518 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 26501256916 in words is "twenty-six billion, five hundred one million, two hundred fifty-six thousand, nine hundred sixteen".