26351473493 has 4 divisors (see below), whose sum is σ = 26356320288. Its totient is φ = 26346626700.

The previous prime is 26351473457. The next prime is 26351473517. The reversal of 26351473493 is 39437415362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39437415362 = 2 ⋅19718707681.

It is a cyclic number.

It is not a de Polignac number, because 26351473493 - 2¹⁴ = 26351457109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26351470493) 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 3 ways as a sum of consecutive naturals, for example, 2415233 + ... + 2426118.

It is an arithmetic number, because the mean of its divisors is an integer number (6589080072).

Almost surely, 2^26351473493 is an apocalyptic number.

It is an amenable number.

26351473493 is a deficient number, since it is larger than the sum of its proper divisors (4846795).

26351473493 is an equidigital number, since it uses as much as digits as its factorization.

26351473493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846794.

The product of its digits is 1632960, while the sum is 47.

The spelling of 26351473493 in words is "twenty-six billion, three hundred fifty-one million, four hundred seventy-three thousand, four hundred ninety-three".