1276550849345 has 16 divisors (see below), whose sum is σ = 1603776404160. Its totient is φ = 974145649344.

The previous prime is 1276550849341. The next prime is 1276550849347. The reversal of 1276550849345 is 5439480556721.

It is a cyclic number.

It is not a de Polignac number, because 1276550849345 - 2² = 1276550849341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1276550849341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53022899 + ... + 53046968.

It is an arithmetic number, because the mean of its divisors is an integer number (100236025260).

It is a 1-persistent number, because it is pandigital, but 2⋅1276550849345 = 2553101698690 is not.

Almost surely, 2^{1276550849345} is an apocalyptic number.

It is an amenable number.

1276550849345 is a deficient number, since it is larger than the sum of its proper divisors (327225554815).

1276550849345 is a wasteful number, since it uses less digits than its factorization.

1276550849345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106069984.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 1276550849345 in words is "one trillion, two hundred seventy-six billion, five hundred fifty million, eight hundred forty-nine thousand, three hundred forty-five".