1259221987493 has 16 divisors (see below), whose sum is σ = 1361473873920. Its totient is φ = 1160575045056.

The previous prime is 1259221987477. The next prime is 1259221987561. The reversal of 1259221987493 is 3947891229521.

It is a cyclic number.

It is not a de Polignac number, because 1259221987493 - 2⁴ = 1259221987477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259121987493) 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, 6472271 + ... + 6663987.

It is an arithmetic number, because the mean of its divisors is an integer number (85092117120).

Almost surely, 2^{1259221987493} is an apocalyptic number.

It is an amenable number.

1259221987493 is a deficient number, since it is larger than the sum of its proper divisors (102251886427).

1259221987493 is a wasteful number, since it uses less digits than its factorization.

1259221987493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201116.

The product of its digits is 19595520, while the sum is 62.

The spelling of 1259221987493 in words is "one trillion, two hundred fifty-nine billion, two hundred twenty-one million, nine hundred eighty-seven thousand, four hundred ninety-three".