1321856982489 has 8 divisors (see below), whose sum is σ = 1855237870240. Its totient is φ = 834857041536.

The previous prime is 1321856982463. The next prime is 1321856982517. The reversal of 1321856982489 is 9842896581231.

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

It is not a de Polignac number, because 1321856982489 - 2⁸ = 1321856982233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321856982289) 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, 11595236632 + ... + 11595236745.

It is an arithmetic number, because the mean of its divisors is an integer number (231904733780).

Almost surely, 2^{1321856982489} is an apocalyptic number.

1321856982489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1321856982489 is a deficient number, since it is larger than the sum of its proper divisors (533380887751).

1321856982489 is a wasteful number, since it uses less digits than its factorization.

1321856982489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23190473399.

The product of its digits is 59719680, while the sum is 66.

The spelling of 1321856982489 in words is "one trillion, three hundred twenty-one billion, eight hundred fifty-six million, nine hundred eighty-two thousand, four hundred eighty-nine".