26934870409 has 4 divisors (see below), whose sum is σ = 26935524880. Its totient is φ = 26934215940.

The previous prime is 26934870401. The next prime is 26934870437. The reversal of 26934870409 is 90407843962.

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 26934870409 - 2³ = 26934870401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26934870401) 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, 261039 + ... + 349300.

It is an arithmetic number, because the mean of its divisors is an integer number (6733881220).

Almost surely, 2^26934870409 is an apocalyptic number.

It is an amenable number.

26934870409 is a deficient number, since it is larger than the sum of its proper divisors (654471).

26934870409 is an equidigital number, since it uses as much as digits as its factorization.

26934870409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654470.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 26934870409 in words is "twenty-six billion, nine hundred thirty-four million, eight hundred seventy thousand, four hundred nine".