26473734197 has 4 divisors (see below), whose sum is σ = 26474357760. Its totient is φ = 26473110636.

The previous prime is 26473734139. The next prime is 26473734251. The reversal of 26473734197 is 79143737462.

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 26473734197 - 2⁸ = 26473733941 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 (26473734097) 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, 243047 + ... + 334692.

It is an arithmetic number, because the mean of its divisors is an integer number (6618589440).

Almost surely, 2^26473734197 is an apocalyptic number.

It is an amenable number.

26473734197 is a deficient number, since it is larger than the sum of its proper divisors (623563).

26473734197 is an equidigital number, since it uses as much as digits as its factorization.

26473734197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623562.

The product of its digits is 5334336, while the sum is 53.

The spelling of 26473734197 in words is "twenty-six billion, four hundred seventy-three million, seven hundred thirty-four thousand, one hundred ninety-seven".