1297268486556 has 48 divisors (see below), whose sum is σ = 3479379101184. Its totient is φ = 368505660096.

The previous prime is 1297268486551. The next prime is 1297268486623. The reversal of 1297268486556 is 6556848627921.

It is a super-2 number, since 2×1297268486556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297268486551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44620360 + ... + 44649423.

It is an arithmetic number, because the mean of its divisors is an integer number (72487064608).

Almost surely, 2^{1297268486556} is an apocalyptic number.

It is an amenable number.

1297268486556 is an abundant number, since it is smaller than the sum of its proper divisors (2182110614628).

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

1297268486556 is a wasteful number, since it uses less digits than its factorization.

1297268486556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89269970 (or 89269968 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 69.

The spelling of 1297268486556 in words is "one trillion, two hundred ninety-seven billion, two hundred sixty-eight million, four hundred eighty-six thousand, five hundred fifty-six".