1263768612756 has 96 divisors (see below), whose sum is σ = 3195265382400. Its totient is φ = 386451305856.

The previous prime is 1263768612749. The next prime is 1263768612797. The reversal of 1263768612756 is 6572168673621.

It is a super-2 number, since 2×1263768612756² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1263768612756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27388801 + ... + 27434903.

It is an arithmetic number, because the mean of its divisors is an integer number (33284014400).

Almost surely, 2^{1263768612756} 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 1263768612756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597632691200).

1263768612756 is an abundant number, since it is smaller than the sum of its proper divisors (1931496769644).

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

1263768612756 is a wasteful number, since it uses less digits than its factorization.

1263768612756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47205 (or 47203 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The spelling of 1263768612756 in words is "one trillion, two hundred sixty-three billion, seven hundred sixty-eight million, six hundred twelve thousand, seven hundred fifty-six".