26205640307 has 8 divisors (see below), whose sum is σ = 32671967232. Its totient is φ = 20419979400.

The previous prime is 26205640277. The next prime is 26205640309. The reversal of 26205640307 is 70304650262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26205640307 - 2²⁶ = 26138531443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26205640309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170166419 + ... + 170166572.

It is an arithmetic number, because the mean of its divisors is an integer number (4083995904).

Almost surely, 2^26205640307 is an apocalyptic number.

26205640307 is a deficient number, since it is larger than the sum of its proper divisors (6466326925).

26205640307 is a wasteful number, since it uses less digits than its factorization.

26205640307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340333009.

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 26205640307 in words is "twenty-six billion, two hundred five million, six hundred forty thousand, three hundred seven".