1272151989027 has 48 divisors (see below), whose sum is σ = 1861960201920. Its totient is φ = 836919772416.

The previous prime is 1272151989007. The next prime is 1272151989091. The reversal of 1272151989027 is 7209891512721.

1272151989027 is a `hidden beast` number, since 1 + 2 + 7 + 21 + 519 + 89 + 0 + 27 = 666.

It is not a de Polignac number, because 1272151989027 - 2¹⁹ = 1272151464739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272151989007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 456130549 + ... + 456133337.

It is an arithmetic number, because the mean of its divisors is an integer number (38790837540).

Almost surely, 2^{1272151989027} is an apocalyptic number.

1272151989027 is a deficient number, since it is larger than the sum of its proper divisors (589808212893).

1272151989027 is a wasteful number, since it uses less digits than its factorization.

1272151989027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052 (or 5049 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 1272151989027 in words is "one trillion, two hundred seventy-two billion, one hundred fifty-one million, nine hundred eighty-nine thousand, twenty-seven".