26840378371 has 4 divisors (see below), whose sum is σ = 26840715552. Its totient is φ = 26840041192.

The previous prime is 26840378363. The next prime is 26840378377. The reversal of 26840378371 is 17387304862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26840378371 - 2³ = 26840378363 is a prime.

It is a super-2 number, since 2×26840378371² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26840378377) 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, 24630 + ... + 232996.

It is an arithmetic number, because the mean of its divisors is an integer number (6710178888).

Almost surely, 2^26840378371 is an apocalyptic number.

26840378371 is a deficient number, since it is larger than the sum of its proper divisors (337181).

26840378371 is a wasteful number, since it uses less digits than its factorization.

26840378371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337180.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 26840378371 in words is "twenty-six billion, eight hundred forty million, three hundred seventy-eight thousand, three hundred seventy-one".