1272780225336 has 32 divisors (see below), whose sum is σ = 3185816895360. Its totient is φ = 423744564192.

The previous prime is 1272780225331. The next prime is 1272780225397. The reversal of 1272780225336 is 6335220872721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272780225331) 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, 32199270 + ... + 32238773.

It is an arithmetic number, because the mean of its divisors is an integer number (99556777980).

Almost surely, 2^{1272780225336} is an apocalyptic number.

It is an amenable number.

1272780225336 is an abundant number, since it is smaller than the sum of its proper divisors (1913036670024).

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

1272780225336 is a wasteful number, since it uses less digits than its factorization.

1272780225336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64438875 (or 64438871 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 1272780225336 in words is "one trillion, two hundred seventy-two billion, seven hundred eighty million, two hundred twenty-five thousand, three hundred thirty-six".