26604139426 has 32 divisors (see below), whose sum is σ = 43842981888. Its totient is φ = 12052869120.

The previous prime is 26604139423. The next prime is 26604139433. The reversal of 26604139426 is 62493140662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26604139423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138031 + ... + 268813.

It is an arithmetic number, because the mean of its divisors is an integer number (1370093184).

Almost surely, 2^26604139426 is an apocalyptic number.

26604139426 is a deficient number, since it is larger than the sum of its proper divisors (17238842462).

26604139426 is a wasteful number, since it uses less digits than its factorization.

26604139426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131026.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 26604139426 in words is "twenty-six billion, six hundred four million, one hundred thirty-nine thousand, four hundred twenty-six".