1264481338045 has 32 divisors (see below), whose sum is σ = 1579616658144. Its totient is φ = 970960896000.

The previous prime is 1264481338031. The next prime is 1264481338067. The reversal of 1264481338045 is 5408331844621.

It can be written as a sum of positive squares in 16 ways, for example, as 573165583929 + 691315754116 = 757077^2 + 831454^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1264481338045 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1264481338045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5895609 + ... + 6106321.

It is an arithmetic number, because the mean of its divisors is an integer number (49363020567).

Almost surely, 2^{1264481338045} is an apocalyptic number.

It is an amenable number.

1264481338045 is a deficient number, since it is larger than the sum of its proper divisors (315135320099).

1264481338045 is a wasteful number, since it uses less digits than its factorization.

1264481338045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211233.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 1264481338045 in words is "one trillion, two hundred sixty-four billion, four hundred eighty-one million, three hundred thirty-eight thousand, forty-five".