42811685345 has 32 divisors (see below), whose sum is σ = 60755353344. Its totient is φ = 28550304000.

The previous prime is 42811685341. The next prime is 42811685351. The reversal of 42811685345 is 54358611824.

It is not a de Polignac number, because 42811685345 - 2² = 42811685341 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42811685345.

It is not an unprimeable number, because it can be changed into a prime (42811685341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90302 + ... + 306231.

It is an arithmetic number, because the mean of its divisors is an integer number (1898604792).

Almost surely, 2^42811685345 is an apocalyptic number.

It is an amenable number.

42811685345 is a deficient number, since it is larger than the sum of its proper divisors (17943667999).

42811685345 is a wasteful number, since it uses less digits than its factorization.

42811685345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396713.

The product of its digits is 921600, while the sum is 47.

The spelling of 42811685345 in words is "forty-two billion, eight hundred eleven million, six hundred eighty-five thousand, three hundred forty-five".