1271793667728 has 80 divisors (see below), whose sum is σ = 3303623374016. Its totient is φ = 421589975040.

The previous prime is 1271793667687. The next prime is 1271793667787. The reversal of 1271793667728 is 8277663971721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28890951 + ... + 28934937.

Almost surely, 2^{1271793667728} is an apocalyptic number.

It is an amenable number.

1271793667728 is an abundant number, since it is smaller than the sum of its proper divisors (2031829706288).

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

1271793667728 is a wasteful number, since it uses less digits than its factorization.

1271793667728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47312 (or 47306 counting only the distinct ones).

The product of its digits is 74680704, while the sum is 66.

The spelling of 1271793667728 in words is "one trillion, two hundred seventy-one billion, seven hundred ninety-three million, six hundred sixty-seven thousand, seven hundred twenty-eight".