264426072065 has 8 divisors (see below), whose sum is σ = 319145456808. Its totient is φ = 210318077440.

The previous prime is 264426072047. The next prime is 264426072067. The reversal of 264426072065 is 560270624462.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17778755569 + 246647316496 = 133337^2 + 496636^2 .

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

It is not a de Polignac number, because 264426072065 - 2⁸ = 264426071809 is a prime.

It is a super-2 number, since 2×264426072065² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264426072067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152846576 + ... + 152848305.

It is an arithmetic number, because the mean of its divisors is an integer number (39893182101).

Almost surely, 2^264426072065 is an apocalyptic number.

It is an amenable number.

264426072065 is a deficient number, since it is larger than the sum of its proper divisors (54719384743).

264426072065 is a wasteful number, since it uses less digits than its factorization.

264426072065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305695059.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 264426072065 in words is "two hundred sixty-four billion, four hundred twenty-six million, seventy-two thousand, sixty-five".