264820640799 has 16 divisors (see below), whose sum is σ = 414823941504. Its totient is φ = 148151407200.

The previous prime is 264820640789. The next prime is 264820640857. The reversal of 264820640799 is 997046028462.

264820640799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 264820640799 - 2¹⁶ = 264820575263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264820640789) 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, 308648337 + ... + 308649194.

It is an arithmetic number, because the mean of its divisors is an integer number (25926496344).

Almost surely, 2^264820640799 is an apocalyptic number.

264820640799 is a deficient number, since it is larger than the sum of its proper divisors (150003300705).

264820640799 is a wasteful number, since it uses less digits than its factorization.

264820640799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617297558.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 264820640799 in words is "two hundred sixty-four billion, eight hundred twenty million, six hundred forty thousand, seven hundred ninety-nine".