26219423978 has 16 divisors (see below), whose sum is σ = 43902292896. Its totient is φ = 11640758640.

The previous prime is 26219423959. The next prime is 26219423987. The reversal of 26219423978 is 87932491262.

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 7 ways as a sum of consecutive naturals, for example, 13857101 + ... + 13858992.

It is an arithmetic number, because the mean of its divisors is an integer number (2743893306).

Almost surely, 2^26219423978 is an apocalyptic number.

26219423978 is a deficient number, since it is larger than the sum of its proper divisors (17682868918).

26219423978 is a wasteful number, since it uses less digits than its factorization.

26219423978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27716149.

The product of its digits is 2612736, while the sum is 53.

The spelling of 26219423978 in words is "twenty-six billion, two hundred nineteen million, four hundred twenty-three thousand, nine hundred seventy-eight".