26705207651 has 4 divisors (see below), whose sum is σ = 26900136312. Its totient is φ = 26510278992.

The previous prime is 26705207597. The next prime is 26705207677. The reversal of 26705207651 is 15670250762.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26705207651 - 2²² = 26701013347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26705207599 and 26705207608.

It is not an unprimeable number, because it can be changed into a prime (26705207251) 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, 97464125 + ... + 97464398.

It is an arithmetic number, because the mean of its divisors is an integer number (6725034078).

Almost surely, 2^26705207651 is an apocalyptic number.

26705207651 is a deficient number, since it is larger than the sum of its proper divisors (194928661).

26705207651 is a wasteful number, since it uses less digits than its factorization.

26705207651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194928660.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 26705207651 in words is "twenty-six billion, seven hundred five million, two hundred seven thousand, six hundred fifty-one".