26420640673 has 8 divisors (see below), whose sum is σ = 30204571520. Its totient is φ = 22639098240.

The previous prime is 26420640667. The next prime is 26420640679. The reversal of 26420640673 is 37604602462.

It is an interprime number because it is at equal distance from previous prime (26420640667) and next prime (26420640679).

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 26420640673 - 2⁵ = 26420640641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26420640679) 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 7 ways as a sum of consecutive naturals, for example, 573333 + ... + 617698.

It is an arithmetic number, because the mean of its divisors is an integer number (3775571440).

Almost surely, 2^26420640673 is an apocalyptic number.

It is an amenable number.

26420640673 is a deficient number, since it is larger than the sum of its proper divisors (3783930847).

26420640673 is a wasteful number, since it uses less digits than its factorization.

26420640673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194207.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 26420640673 in words is "twenty-six billion, four hundred twenty million, six hundred forty thousand, six hundred seventy-three".