264340226455640 has 64 divisors (see below), whose sum is σ = 595362341700000. Its totient is φ = 105630021439488.

The previous prime is 264340226455637. The next prime is 264340226455649. The reversal of 264340226455640 is 46554622043462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264340226455649) 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 15 ways as a sum of consecutive naturals, for example, 247118027 + ... + 248185413.

Almost surely, 2^{264340226455640} is an apocalyptic number.

264340226455640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264340226455640 is an abundant number, since it is smaller than the sum of its proper divisors (331022115244360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264340226455640 is a wasteful number, since it uses less digits than its factorization.

264340226455640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073604 (or 1073600 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 53.

The spelling of 264340226455640 in words is "two hundred sixty-four trillion, three hundred forty billion, two hundred twenty-six million, four hundred fifty-five thousand, six hundred forty".