26742418397 has 4 divisors (see below), whose sum is σ = 26754217056. Its totient is φ = 26730619740.

The previous prime is 26742418291. The next prime is 26742418399. The reversal of 26742418397 is 79381424762.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 26742418397 - 2²⁴ = 26725641181 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 (26742418399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5895929 + ... + 5900462.

It is an arithmetic number, because the mean of its divisors is an integer number (6688554264).

Almost surely, 2^26742418397 is an apocalyptic number.

It is an amenable number.

26742418397 is a deficient number, since it is larger than the sum of its proper divisors (11798659).

26742418397 is a wasteful number, since it uses less digits than its factorization.

26742418397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11798658.

The product of its digits is 4064256, while the sum is 53.

The spelling of 26742418397 in words is "twenty-six billion, seven hundred forty-two million, four hundred eighteen thousand, three hundred ninety-seven".