26706270320921 has 4 divisors (see below), whose sum is σ = 26855467362000. Its totient is φ = 26557073279844.

The previous prime is 26706270320893. The next prime is 26706270320923. The reversal of 26706270320921 is 12902307260762.

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 a de Polignac number, because none of the positive numbers 2^k-26706270320921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26706270320923) 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, 74598520271 + ... + 74598520628.

It is an arithmetic number, because the mean of its divisors is an integer number (6713866840500).

Almost surely, 2^{26706270320921} is an apocalyptic number.

It is an amenable number.

26706270320921 is a deficient number, since it is larger than the sum of its proper divisors (149197041079).

26706270320921 is a wasteful number, since it uses less digits than its factorization.

26706270320921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149197041078.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 26706270320921 in words is "twenty-six trillion, seven hundred six billion, two hundred seventy million, three hundred twenty thousand, nine hundred twenty-one".