1264826330081 has 4 divisors (see below), whose sum is σ = 1264828734612. Its totient is φ = 1264823925552.

The previous prime is 1264826330069. The next prime is 1264826330099. The reversal of 1264826330081 is 1800336284621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1143154425856 + 121671904225 = 1069184^2 + 348815^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264826330081 - 2¹⁰ = 1264826329057 is a prime.

It is a super-2 number, since 2×1264826330081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264826330021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36350 + ... + 1590903.

It is an arithmetic number, because the mean of its divisors is an integer number (316207183653).

Almost surely, 2^{1264826330081} is an apocalyptic number.

It is an amenable number.

1264826330081 is a deficient number, since it is larger than the sum of its proper divisors (2404531).

1264826330081 is an equidigital number, since it uses as much as digits as its factorization.

1264826330081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404530.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 1264826330081 in words is "one trillion, two hundred sixty-four billion, eight hundred twenty-six million, three hundred thirty thousand, eighty-one".