1268021227555 has 8 divisors (see below), whose sum is σ = 1601711024400. Its totient is φ = 961026614496.

The previous prime is 1268021227553. The next prime is 1268021227559. The reversal of 1268021227555 is 5557221208621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268021227555 - 2¹ = 1268021227553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268021227553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6673795840 + ... + 6673796029.

It is an arithmetic number, because the mean of its divisors is an integer number (200213878050).

Almost surely, 2^{1268021227555} is an apocalyptic number.

1268021227555 is a deficient number, since it is larger than the sum of its proper divisors (333689796845).

1268021227555 is a wasteful number, since it uses less digits than its factorization.

1268021227555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347591893.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 1268021227555 in words is "one trillion, two hundred sixty-eight billion, twenty-one million, two hundred twenty-seven thousand, five hundred fifty-five".