26447654564 has 6 divisors (see below), whose sum is σ = 46283395494. Its totient is φ = 13223827280.

The previous prime is 26447654549. The next prime is 26447654593. The reversal of 26447654564 is 46545674462.

It can be written as a sum of positive squares in only one way, i.e., 25268281600 + 1179372964 = 158960^2 + 34342^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305956817 + ... + 3305956824.

It is an arithmetic number, because the mean of its divisors is an integer number (7713899249).

Almost surely, 2^26447654564 is an apocalyptic number.

It is an amenable number.

26447654564 is a deficient number, since it is larger than the sum of its proper divisors (19835740930).

26447654564 is a wasteful number, since it uses less digits than its factorization.

26447654564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611913645 (or 6611913643 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 53.

The spelling of 26447654564 in words is "twenty-six billion, four hundred forty-seven million, six hundred fifty-four thousand, five hundred sixty-four".