1271206660475 has 12 divisors (see below), whose sum is σ = 1576311742776. Its totient is φ = 1016955338880.

The previous prime is 1271206660429. The next prime is 1271206660483. The reversal of 1271206660475 is 5740666021721.

It is not a de Polignac number, because 1271206660475 - 2¹⁴ = 1271206644091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3381539 + ... + 3738611.

It is an arithmetic number, because the mean of its divisors is an integer number (131359311898).

Almost surely, 2^{1271206660475} is an apocalyptic number.

1271206660475 is a deficient number, since it is larger than the sum of its proper divisors (305105082301).

1271206660475 is a wasteful number, since it uses less digits than its factorization.

1271206660475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499486 (or 499481 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 1271206660475 in words is "one trillion, two hundred seventy-one billion, two hundred six million, six hundred sixty thousand, four hundred seventy-five".