42810728765 has 16 divisors (see below), whose sum is σ = 58723093632. Its totient is φ = 29350309824.

The previous prime is 42810728687. The next prime is 42810728773. The reversal of 42810728765 is 56782701824.

It is a cyclic number.

It is not a de Polignac number, because 42810728765 - 2²⁶ = 42743619901 is a prime.

It is a congruent 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, 72767 + ... + 301523.

It is an arithmetic number, because the mean of its divisors is an integer number (3670193352).

Almost surely, 2^42810728765 is an apocalyptic number.

It is an amenable number.

42810728765 is a deficient number, since it is larger than the sum of its proper divisors (15912364867).

42810728765 is a wasteful number, since it uses less digits than its factorization.

42810728765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234116.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 42810728765 in words is "forty-two billion, eight hundred ten million, seven hundred twenty-eight thousand, seven hundred sixty-five".