6489742722785 has 16 divisors (see below), whose sum is σ = 8903699440896. Its totient is φ = 4448368870848.

The previous prime is 6489742722773. The next prime is 6489742722821. The reversal of 6489742722785 is 5872272479846.

It is not a de Polignac number, because 6489742722785 - 2⁴⁰ = 5390231095009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36168077 + ... + 36347066.

It is an arithmetic number, because the mean of its divisors is an integer number (556481215056).

Almost surely, 2^{6489742722785} is an apocalyptic number.

It is an amenable number.

6489742722785 is a deficient number, since it is larger than the sum of its proper divisors (2413956718111).

6489742722785 is a wasteful number, since it uses less digits than its factorization.

6489742722785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72517712.

The product of its digits is 758661120, while the sum is 71.

The spelling of 6489742722785 in words is "six trillion, four hundred eighty-nine billion, seven hundred forty-two million, seven hundred twenty-two thousand, seven hundred eighty-five".