1321860264159 has 16 divisors (see below), whose sum is σ = 1866208197888. Its totient is φ = 829379171712.

The previous prime is 1321860264149. The next prime is 1321860264203. The reversal of 1321860264159 is 9514620681231.

It is not a de Polignac number, because 1321860264159 - 2⁷ = 1321860264031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321860264119) 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, 1563724 + ... + 2255870.

It is an arithmetic number, because the mean of its divisors is an integer number (116638012368).

Almost surely, 2^{1321860264159} is an apocalyptic number.

1321860264159 is a deficient number, since it is larger than the sum of its proper divisors (544347933729).

1321860264159 is a wasteful number, since it uses less digits than its factorization.

1321860264159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729614.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 1321860264159 in words is "one trillion, three hundred twenty-one billion, eight hundred sixty million, two hundred sixty-four thousand, one hundred fifty-nine".