26179874421 has 8 divisors (see below), whose sum is σ = 36959822784. Its totient is φ = 16426587840.

The previous prime is 26179874411. The next prime is 26179874423. The reversal of 26179874421 is 12447897162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26179874421 - 2⁷ = 26179874293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 513330871 = 26179874421 / (2 + 6 + 1 + 7 + 9 + 8 + 7 + 4 + 4 + 2 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26179874423) by changing a digit.

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, 256665385 + ... + 256665486.

It is an arithmetic number, because the mean of its divisors is an integer number (4619977848).

Almost surely, 2^26179874421 is an apocalyptic number.

It is an amenable number.

26179874421 is a deficient number, since it is larger than the sum of its proper divisors (10779948363).

26179874421 is a wasteful number, since it uses less digits than its factorization.

26179874421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513330891.

The product of its digits is 1354752, while the sum is 51.

The spelling of 26179874421 in words is "twenty-six billion, one hundred seventy-nine million, eight hundred seventy-four thousand, four hundred twenty-one".