1276466997312 has 448 divisors, whose sum is σ = 4201928908800. Its totient is φ = 377326356480.

The previous prime is 1276466997293. The next prime is 1276466997319. The reversal of 1276466997312 is 2137996646721.

1276466997312 is a `hidden beast` number, since 1 + 2 + 7 + 6 + 466 + 99 + 73 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1276466997312.

It is not an unprimeable number, because it can be changed into a prime (1276466997319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96790783 + ... + 96803969.

It is an arithmetic number, because the mean of its divisors is an integer number (9379305600).

Almost surely, 2^{1276466997312} is an apocalyptic number.

1276466997312 is a gapful number since it is divisible by the number (12) 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 1276466997312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2100964454400).

1276466997312 is an abundant number, since it is smaller than the sum of its proper divisors (2925461911488).

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

1276466997312 is a wasteful number, since it uses less digits than its factorization.

1276466997312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391 (or 13375 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

It can be divided in two parts, 1276466 and 997312, that added together give a triangular number (2273778 = T₂₁₃₂).

The spelling of 1276466997312 in words is "one trillion, two hundred seventy-six billion, four hundred sixty-six million, nine hundred ninety-seven thousand, three hundred twelve".