1271387234064 has 20 divisors (see below), whose sum is σ = 3284417021456. Its totient is φ = 423795744672.

The previous prime is 1271387234041. The next prime is 1271387234099. The reversal of 1271387234064 is 4604327831721.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 26487234043 = 1271387234064 / (1 + 2 + 7 + 1 + 3 + 8 + 7 + 2 + 3 + 4 + 0 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13243616974 + ... + 13243617069.

Almost surely, 2^{1271387234064} is an apocalyptic number.

It is an amenable number.

1271387234064 is an abundant number, since it is smaller than the sum of its proper divisors (2013029787392).

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

1271387234064 is a wasteful number, since it uses less digits than its factorization.

1271387234064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26487234054 (or 26487234048 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 1271387234064 in words is "one trillion, two hundred seventy-one billion, three hundred eighty-seven million, two hundred thirty-four thousand, sixty-four".