1264704340326 has 32 divisors (see below), whose sum is σ = 2990433911040. Its totient is φ = 348883955616.

The previous prime is 1264704340309. The next prime is 1264704340351. The reversal of 1264704340326 is 6230434074621.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519171336 + ... + 519173771.

It is an arithmetic number, because the mean of its divisors is an integer number (93451059720).

Almost surely, 2^{1264704340326} is an apocalyptic number.

1264704340326 is an abundant number, since it is smaller than the sum of its proper divisors (1725729570714).

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

1264704340326 is a wasteful number, since it uses less digits than its factorization.

1264704340326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038345148.

The product of its (nonzero) digits is 580608, while the sum is 42.

The spelling of 1264704340326 in words is "one trillion, two hundred sixty-four billion, seven hundred four million, three hundred forty thousand, three hundred twenty-six".