1271378226486 has 16 divisors (see below), whose sum is σ = 2545306872624. Its totient is φ = 423367672224.

The previous prime is 1271378226451. The next prime is 1271378226509. The reversal of 1271378226486 is 6846228731721.

It is a congruent number.

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, 106261005 + ... + 106272968.

It is an arithmetic number, because the mean of its divisors is an integer number (159081679539).

Almost surely, 2^{1271378226486} is an apocalyptic number.

1271378226486 is an abundant number, since it is smaller than the sum of its proper divisors (1273928646138).

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

1271378226486 is a wasteful number, since it uses less digits than its factorization.

1271378226486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212534975.

The product of its digits is 10838016, while the sum is 57.

The spelling of 1271378226486 in words is "one trillion, two hundred seventy-one billion, three hundred seventy-eight million, two hundred twenty-six thousand, four hundred eighty-six".