1272696378536 has 16 divisors (see below), whose sum is σ = 2603242592640. Its totient is φ = 578498353840.

The previous prime is 1272696378533. The next prime is 1272696378601. The reversal of 1272696378536 is 6358736962721.

It is not an unprimeable number, because it can be changed into a prime (1272696378533) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7231229336 + ... + 7231229511.

It is an arithmetic number, because the mean of its divisors is an integer number (162702662040).

Almost surely, 2^{1272696378536} is an apocalyptic number.

It is an amenable number.

1272696378536 is an abundant number, since it is smaller than the sum of its proper divisors (1330546214104).

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

1272696378536 is a wasteful number, since it uses less digits than its factorization.

1272696378536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14462458864 (or 14462458860 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 65.

The spelling of 1272696378536 in words is "one trillion, two hundred seventy-two billion, six hundred ninety-six million, three hundred seventy-eight thousand, five hundred thirty-six".