42645305887 has 8 divisors (see below), whose sum is σ = 42761905200. Its totient is φ = 42528777984.

The previous prime is 42645305873. The next prime is 42645305893. The reversal of 42645305887 is 78850354624.

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

It is a cyclic number.

It is not a de Polignac number, because 42645305887 - 2¹¹ = 42645303839 is a prime.

It is a super-2 number, since 2×42645305887² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645305827) 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, 1311753 + ... + 1343869.

It is an arithmetic number, because the mean of its divisors is an integer number (5345238150).

Almost surely, 2^42645305887 is an apocalyptic number.

42645305887 is a deficient number, since it is larger than the sum of its proper divisors (116599313).

42645305887 is a wasteful number, since it uses less digits than its factorization.

42645305887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35705.

The product of its (nonzero) digits is 6451200, while the sum is 52.

The spelling of 42645305887 in words is "forty-two billion, six hundred forty-five million, three hundred five thousand, eight hundred eighty-seven".