1306473621643 has 4 divisors (see below), whose sum is σ = 1363276822608. Its totient is φ = 1249670420680.

The previous prime is 1306473621587. The next prime is 1306473621701. The reversal of 1306473621643 is 3461263746031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1306473621643 - 2¹⁷ = 1306473490571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1306473621593 and 1306473621602.

It is not an unprimeable number, because it can be changed into a prime (1306473621043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28401600448 + ... + 28401600493.

It is an arithmetic number, because the mean of its divisors is an integer number (340819205652).

Almost surely, 2^{1306473621643} is an apocalyptic number.

1306473621643 is a deficient number, since it is larger than the sum of its proper divisors (56803200965).

1306473621643 is an equidigital number, since it uses as much as digits as its factorization.

1306473621643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56803200964.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 1306473621643 in words is "one trillion, three hundred six billion, four hundred seventy-three million, six hundred twenty-one thousand, six hundred forty-three".