1248791667828 has 96 divisors (see below), whose sum is σ = 3049071083520. Its totient is φ = 397347534720.

The previous prime is 1248791667793. The next prime is 1248791667833. The reversal of 1248791667828 is 8287661978421.

It is a happy number.

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, 8973151 + ... + 9111257.

It is an arithmetic number, because the mean of its divisors is an integer number (31761157120).

Almost surely, 2^{1248791667828} is an apocalyptic number.

It is an amenable number.

1248791667828 is an abundant number, since it is smaller than the sum of its proper divisors (1800279415692).

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

1248791667828 is a wasteful number, since it uses less digits than its factorization.

1248791667828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138477 (or 138475 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 69.

The spelling of 1248791667828 in words is "one trillion, two hundred forty-eight billion, seven hundred ninety-one million, six hundred sixty-seven thousand, eight hundred twenty-eight".