26471391623 has 4 divisors (see below), whose sum is σ = 26507212920. Its totient is φ = 26435570328.

The previous prime is 26471391613. The next prime is 26471391631. The reversal of 26471391623 is 32619317462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26471391623 - 2¹⁴ = 26471375239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26471391613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17909540 + ... + 17911017.

It is an arithmetic number, because the mean of its divisors is an integer number (6626803230).

Almost surely, 2^26471391623 is an apocalyptic number.

26471391623 is a deficient number, since it is larger than the sum of its proper divisors (35821297).

26471391623 is an equidigital number, since it uses as much as digits as its factorization.

26471391623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35821296.

The product of its digits is 326592, while the sum is 44.

The spelling of 26471391623 in words is "twenty-six billion, four hundred seventy-one million, three hundred ninety-one thousand, six hundred twenty-three".