1021317456459 has 16 divisors (see below), whose sum is σ = 1369482895872. Its totient is φ = 677023203648.

The previous prime is 1021317456437. The next prime is 1021317456473. The reversal of 1021317456459 is 9546547131201.

It is not a de Polignac number, because 1021317456459 - 2¹⁶ = 1021317390923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021317456559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496719 + ... + 1513064.

It is an arithmetic number, because the mean of its divisors is an integer number (85592680992).

Almost surely, 2^{1021317456459} is an apocalyptic number.

1021317456459 is a deficient number, since it is larger than the sum of its proper divisors (348165439413).

1021317456459 is a wasteful number, since it uses less digits than its factorization.

1021317456459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010746.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 1021317456459 in words is "one trillion, twenty-one billion, three hundred seventeen million, four hundred fifty-six thousand, four hundred fifty-nine".