1271258472747 has 32 divisors (see below), whose sum is σ = 1758507697408. Its totient is φ = 816365039616.

The previous prime is 1271258472727. The next prime is 1271258472763. The reversal of 1271258472747 is 7472748521721.

It is a happy number.

It is not a de Polignac number, because 1271258472747 - 2³¹ = 1269110989099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1271258472727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3361683 + ... + 3720675.

It is an arithmetic number, because the mean of its divisors is an integer number (54953365544).

Almost surely, 2^{1271258472747} is an apocalyptic number.

1271258472747 is a deficient number, since it is larger than the sum of its proper divisors (487249224661).

1271258472747 is a wasteful number, since it uses less digits than its factorization.

1271258472747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359419.

The product of its digits is 12293120, while the sum is 57.

The spelling of 1271258472747 in words is "one trillion, two hundred seventy-one billion, two hundred fifty-eight million, four hundred seventy-two thousand, seven hundred forty-seven".