26809103450 has 12 divisors (see below), whose sum is σ = 49864932510. Its totient is φ = 10723641360.

The previous prime is 26809103449. The next prime is 26809103467. The reversal of 26809103450 is 5430190862.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22985288881 + 3823814569 = 151609^2 + 61837^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268090985 + ... + 268091084.

Almost surely, 2^26809103450 is an apocalyptic number.

26809103450 is a deficient number, since it is larger than the sum of its proper divisors (23055829060).

26809103450 is a wasteful number, since it uses less digits than its factorization.

26809103450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536182081 (or 536182076 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 26809103450 in words is "twenty-six billion, eight hundred nine million, one hundred three thousand, four hundred fifty".