1268681622256 has 10 divisors (see below), whose sum is σ = 2458070643152. Its totient is φ = 634340811120.

The previous prime is 1268681622211. The next prime is 1268681622269. The reversal of 1268681622256 is 6522261868621.

It is a junction number, because it is equal to n+sod(n) for n = 1268681622197 and 1268681622206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39646300680 + ... + 39646300711.

Almost surely, 2^{1268681622256} is an apocalyptic number.

1268681622256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1268681622256 is a deficient number, since it is larger than the sum of its proper divisors (1189389020896).

1268681622256 is an equidigital number, since it uses as much as digits as its factorization.

1268681622256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79292601399 (or 79292601393 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The spelling of 1268681622256 in words is "one trillion, two hundred sixty-eight billion, six hundred eighty-one million, six hundred twenty-two thousand, two hundred fifty-six".