26240520478 has 16 divisors (see below), whose sum is σ = 39613275936. Its totient is φ = 13036262400.

The previous prime is 26240520451. The next prime is 26240520479. The reversal of 26240520478 is 87402504262.

It is a self number, because there is not a number n which added to its sum of digits gives 26240520478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26240520479) 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, 276378 + ... + 358978.

It is an arithmetic number, because the mean of its divisors is an integer number (2475829746).

Almost surely, 2^26240520478 is an apocalyptic number.

26240520478 is a deficient number, since it is larger than the sum of its proper divisors (13372755458).

26240520478 is a wasteful number, since it uses less digits than its factorization.

26240520478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83619.

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 26240520478 in words is "twenty-six billion, two hundred forty million, five hundred twenty thousand, four hundred seventy-eight".