1266912420480 has 1344 divisors, whose sum is σ = 5331849166080. Its totient is φ = 286878412800.

The previous prime is 1266912420457. The next prime is 1266912420497. The reversal of 1266912420480 is 840242196621.

It is a happy number.

1266912420480 is a `hidden beast` number, since 1 + 2 + 66 + 91 + 2 + 4 + 20 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 3452077257 + ... + 3452077623.

Almost surely, 2^{1266912420480} is an apocalyptic number.

1266912420480 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 1266912420480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665924583040).

1266912420480 is an abundant number, since it is smaller than the sum of its proper divisors (4064936745600).

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

1266912420480 is an equidigital number, since it uses as much as digits as its factorization.

1266912420480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 1266912420480 in words is "one trillion, two hundred sixty-six billion, nine hundred twelve million, four hundred twenty thousand, four hundred eighty".