42356611605 has 48 divisors (see below), whose sum is σ = 86002012224. Its totient is φ = 17602744320.

The previous prime is 42356611571. The next prime is 42356611621. The reversal of 42356611605 is 50611665324.

42356611605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42356611605 - 2¹⁰ = 42356610581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2611372 + ... + 2627541.

It is an arithmetic number, because the mean of its divisors is an integer number (1791708588).

Almost surely, 2^42356611605 is an apocalyptic number.

It is an amenable number.

42356611605 is an abundant number, since it is smaller than the sum of its proper divisors (43645400619).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42356611605 is a wasteful number, since it uses less digits than its factorization.

42356611605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238946 (or 5238939 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 42356611605 in words is "forty-two billion, three hundred fifty-six million, six hundred eleven thousand, six hundred five".