1276400250264 has 16 divisors (see below), whose sum is σ = 3191000625720. Its totient is φ = 425466750080.

The previous prime is 1276400250263. The next prime is 1276400250361. The reversal of 1276400250264 is 4620520046721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276400250263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26591671857 + ... + 26591671904.

Almost surely, 2^{1276400250264} is an apocalyptic number.

It is an amenable number.

1276400250264 is an abundant number, since it is smaller than the sum of its proper divisors (1914600375456).

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

1276400250264 is a wasteful number, since it uses less digits than its factorization.

1276400250264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53183343770 (or 53183343766 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

Adding to 1276400250264 its reverse (4620520046721), we get a palindrome (5896920296985).

The spelling of 1276400250264 in words is "one trillion, two hundred seventy-six billion, four hundred million, two hundred fifty thousand, two hundred sixty-four".