1321255454255 has 16 divisors (see below), whose sum is σ = 1729884017664. Its totient is φ = 960779438880.

The previous prime is 1321255454213. The next prime is 1321255454263. The reversal of 1321255454255 is 5524545521231.

It is not a de Polignac number, because 1321255454255 - 2⁶ = 1321255454191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270247 + ... + 2063016.

It is an arithmetic number, because the mean of its divisors is an integer number (108117751104).

Almost surely, 2^{1321255454255} is an apocalyptic number.

1321255454255 is a deficient number, since it is larger than the sum of its proper divisors (408628563409).

1321255454255 is a wasteful number, since it uses less digits than its factorization.

1321255454255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340486.

The product of its digits is 1200000, while the sum is 44.

The spelling of 1321255454255 in words is "one trillion, three hundred twenty-one billion, two hundred fifty-five million, four hundred fifty-four thousand, two hundred fifty-five".