1266419616000 has 2304 divisors, whose sum is σ = 5642209198080. Its totient is φ = 243855360000.

The previous prime is 1266419615977. The next prime is 1266419616023. The reversal of 1266419616000 is 6169146621.

It is an interprime number because it is at equal distance from previous prime (1266419615977) and next prime (1266419616023).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 9971807937 + ... + 9971808063.

It is an arithmetic number, because the mean of its divisors is an integer number (2448875520).

Almost surely, 2^{1266419616000} is an apocalyptic number.

1266419616000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266419616000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821104599040).

1266419616000 is an abundant number, since it is smaller than the sum of its proper divisors (4375789582080).

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

1266419616000 is a wasteful number, since it uses less digits than its factorization.

1266419616000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 1266419616000 in words is "one trillion, two hundred sixty-six billion, four hundred nineteen million, six hundred sixteen thousand".