1272951804388 has 24 divisors (see below), whose sum is σ = 2437184149344. Its totient is φ = 576946972800.

The previous prime is 1272951804367. The next prime is 1272951804427. The reversal of 1272951804388 is 8834081592721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41671653 + ... + 41702188.

It is an arithmetic number, because the mean of its divisors is an integer number (101549339556).

Almost surely, 2^{1272951804388} is an apocalyptic number.

It is an amenable number.

1272951804388 is a deficient number, since it is larger than the sum of its proper divisors (1164232344956).

1272951804388 is a wasteful number, since it uses less digits than its factorization.

1272951804388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83374203 (or 83374201 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 1272951804388 in words is "one trillion, two hundred seventy-two billion, nine hundred fifty-one million, eight hundred four thousand, three hundred eighty-eight".