26420723408 has 20 divisors (see below), whose sum is σ = 52438693188. Its totient is φ = 12888157440.

The previous prime is 26420723387. The next prime is 26420723419. The reversal of 26420723408 is 80432702462.

It can be written as a sum of positive squares in 2 ways, for example, as 334597264 + 26086126144 = 18292^2 + 161512^2 .

It is a congruent number.

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, 20137091 + ... + 20138402.

Almost surely, 2^26420723408 is an apocalyptic number.

It is an amenable number.

26420723408 is a deficient number, since it is larger than the sum of its proper divisors (26017969780).

26420723408 is a wasteful number, since it uses less digits than its factorization.

26420723408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40275542 (or 40275536 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 26420723408 in words is "twenty-six billion, four hundred twenty million, seven hundred twenty-three thousand, four hundred eight".