26681223001 has 4 divisors (see below), whose sum is σ = 26689198032. Its totient is φ = 26673247972.

The previous prime is 26681222993. The next prime is 26681223011. The reversal of 26681223001 is 10032218662.

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 26681223001 - 2³ = 26681222993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26681223011) 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, 3982495 + ... + 3989188.

It is an arithmetic number, because the mean of its divisors is an integer number (6672299508).

Almost surely, 2^26681223001 is an apocalyptic number.

It is an amenable number.

26681223001 is a deficient number, since it is larger than the sum of its proper divisors (7975031).

26681223001 is an equidigital number, since it uses as much as digits as its factorization.

26681223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975030.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 26681223001 in words is "twenty-six billion, six hundred eighty-one million, two hundred twenty-three thousand, one".