26809151397 has 16 divisors (see below), whose sum is σ = 40855762560. Its totient is φ = 15318119232.

The previous prime is 26809151357. The next prime is 26809151483. The reversal of 26809151397 is 79315190862.

It is not a de Polignac number, because 26809151397 - 2¹² = 26809147301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26809151357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205623 + ... + 309675.

It is an arithmetic number, because the mean of its divisors is an integer number (2553485160).

Almost surely, 2^26809151397 is an apocalyptic number.

It is an amenable number.

26809151397 is a deficient number, since it is larger than the sum of its proper divisors (14046611163).

26809151397 is a wasteful number, since it uses less digits than its factorization.

26809151397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116332.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 26809151397 in words is "twenty-six billion, eight hundred nine million, one hundred fifty-one thousand, three hundred ninety-seven".