26364320666643 has 32 divisors (see below), whose sum is σ = 35591168710656. Its totient is φ = 17357878153728.

The previous prime is 26364320666627. The next prime is 26364320666653. The reversal of 26364320666643 is 34666602346362.

It is not a de Polignac number, because 26364320666643 - 2⁴ = 26364320666627 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (26364320666653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1131844305 + ... + 1131867597.

It is an arithmetic number, because the mean of its divisors is an integer number (1112224022208).

Almost surely, 2^{26364320666643} is an apocalyptic number.

26364320666643 is a deficient number, since it is larger than the sum of its proper divisors (9226848044013).

26364320666643 is a wasteful number, since it uses less digits than its factorization.

26364320666643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34203.

The product of its (nonzero) digits is 80621568, while the sum is 57.

The spelling of 26364320666643 in words is "twenty-six trillion, three hundred sixty-four billion, three hundred twenty million, six hundred sixty-six thousand, six hundred forty-three".