26664001265 has 8 divisors (see below), whose sum is σ = 34905601728. Its totient is φ = 19392000880.

The previous prime is 26664001261. The next prime is 26664001307. The reversal of 26664001265 is 56210046662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26664001265 - 2² = 26664001261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26664001261) 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, 242399957 + ... + 242400066.

It is an arithmetic number, because the mean of its divisors is an integer number (4363200216).

Almost surely, 2^26664001265 is an apocalyptic number.

It is an amenable number.

26664001265 is a deficient number, since it is larger than the sum of its proper divisors (8241600463).

26664001265 is a wasteful number, since it uses less digits than its factorization.

26664001265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484800039.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 26664001265 in words is "twenty-six billion, six hundred sixty-four million, one thousand, two hundred sixty-five".