26701872961 has 4 divisors (see below), whose sum is σ = 26720026624. Its totient is φ = 26683719300.

The previous prime is 26701872937. The next prime is 26701872973. The reversal of 26701872961 is 16927810762.

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 26701872961 - 2²⁵ = 26668318529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26701872761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9074625 + ... + 9077566.

It is an arithmetic number, because the mean of its divisors is an integer number (6680006656).

Almost surely, 2^26701872961 is an apocalyptic number.

It is an amenable number.

26701872961 is a deficient number, since it is larger than the sum of its proper divisors (18153663).

26701872961 is a wasteful number, since it uses less digits than its factorization.

26701872961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153662.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 26701872961 in words is "twenty-six billion, seven hundred one million, eight hundred seventy-two thousand, nine hundred sixty-one".