1264803263888 has 20 divisors (see below), whose sum is σ = 2557102251648. Its totient is φ = 604905908640.

The previous prime is 1264803263873. The next prime is 1264803263929. The reversal of 1264803263888 is 8883623084621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718482328 + ... + 1718483063.

Almost surely, 2^{1264803263888} is an apocalyptic number.

It is an amenable number.

1264803263888 is an abundant number, since it is smaller than the sum of its proper divisors (1292298987760).

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

1264803263888 is a wasteful number, since it uses less digits than its factorization.

1264803263888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436965422 (or 3436965416 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 59.

The spelling of 1264803263888 in words is "one trillion, two hundred sixty-four billion, eight hundred three million, two hundred sixty-three thousand, eight hundred eighty-eight".