1263904813248 has 448 divisors, whose sum is σ = 4368077193216. Its totient is φ = 312947712000.

The previous prime is 1263904813207. The next prime is 1263904813273. The reversal of 1263904813248 is 8423184093621.

It is a tau number, because it is divible by the number of its divisors (448).

It is a self number, because there is not a number n which added to its sum of digits gives 1263904813248.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30685788 + ... + 30726948.

Almost surely, 2^{1263904813248} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263904813248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2184038596608).

1263904813248 is an abundant number, since it is smaller than the sum of its proper divisors (3104172379968).

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

1263904813248 is a wasteful number, since it uses less digits than its factorization.

1263904813248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41292 (or 41282 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 1263904813248 in words is "one trillion, two hundred sixty-three billion, nine hundred four million, eight hundred thirteen thousand, two hundred forty-eight".