26209050646 has 16 divisors (see below), whose sum is σ = 39391509168. Its totient is φ = 13078573600.

The previous prime is 26209050631. The next prime is 26209050649. The reversal of 26209050646 is 64605090262.

It is a junction number, because it is equal to n+sod(n) for n = 26209050599 and 26209050608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26209050649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446161 + ... + 2456851.

It is an arithmetic number, because the mean of its divisors is an integer number (2461969323).

Almost surely, 2^26209050646 is an apocalyptic number.

26209050646 is a deficient number, since it is larger than the sum of its proper divisors (13182458522).

26209050646 is a wasteful number, since it uses less digits than its factorization.

26209050646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13007.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 26209050646 in words is "twenty-six billion, two hundred nine million, fifty thousand, six hundred forty-six".