1276430343552 has 1536 divisors, whose sum is σ = 5004260352000. Its totient is φ = 309100216320.

The previous prime is 1276430343509. The next prime is 1276430343607. The reversal of 1276430343552 is 2553430346721.

It is a happy number.

1276430343552 is a `hidden beast` number, since 1 + 2 + 7 + 64 + 3 + 0 + 34 + 3 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1276430343498 and 1276430343507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4104277477 + ... + 4104277787.

It is an arithmetic number, because the mean of its divisors is an integer number (3257982000).

Almost surely, 2^{1276430343552} is an apocalyptic number.

1276430343552 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 1276430343552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2502130176000).

1276430343552 is an abundant number, since it is smaller than the sum of its proper divisors (3727830008448).

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

1276430343552 is a wasteful number, since it uses less digits than its factorization.

1276430343552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 1276430343552 in words is "one trillion, two hundred seventy-six billion, four hundred thirty million, three hundred forty-three thousand, five hundred fifty-two".