1276376513764 has 24 divisors (see below), whose sum is σ = 2460376271808. Its totient is φ = 574538411040.

The previous prime is 1276376513761. The next prime is 1276376513779. The reversal of 1276376513764 is 4673156736721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1276376513699 and 1276376513708.

It is not an unprimeable number, because it can be changed into a prime (1276376513761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140813707 + ... + 140822770.

It is an arithmetic number, because the mean of its divisors is an integer number (102515677992).

Almost surely, 2^{1276376513764} is an apocalyptic number.

It is an amenable number.

1276376513764 is a deficient number, since it is larger than the sum of its proper divisors (1183999758044).

1276376513764 is a wasteful number, since it uses less digits than its factorization.

1276376513764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281636595 (or 281636593 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 58.

The spelling of 1276376513764 in words is "one trillion, two hundred seventy-six billion, three hundred seventy-six million, five hundred thirteen thousand, seven hundred sixty-four".