1266713668350 has 432 divisors, whose sum is σ = 3925173116592. Its totient is φ = 303361044480.

The previous prime is 1266713668349. The next prime is 1266713668373. The reversal of 1266713668350 is 538663176621.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 75965614 + ... + 75982286.

It is an arithmetic number, because the mean of its divisors is an integer number (9086048881).

Almost surely, 2^{1266713668350} is an apocalyptic number.

1266713668350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266713668350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1962586558296).

1266713668350 is an abundant number, since it is smaller than the sum of its proper divisors (2658459448242).

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

1266713668350 is a wasteful number, since it uses less digits than its factorization.

1266713668350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16763 (or 16733 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1266713668350 in words is "one trillion, two hundred sixty-six billion, seven hundred thirteen million, six hundred sixty-eight thousand, three hundred fifty".