42019876565 has 32 divisors (see below), whose sum is σ = 55822037760. Its totient is φ = 30202737664.

The previous prime is 42019876553. The next prime is 42019876597. The reversal of 42019876565 is 56567891024.

42019876565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42019876565 - 2⁶ = 42019876501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 973982 + ... + 1016208.

It is an arithmetic number, because the mean of its divisors is an integer number (1744438680).

Almost surely, 2^42019876565 is an apocalyptic number.

It is an amenable number.

42019876565 is a deficient number, since it is larger than the sum of its proper divisors (13802161195).

42019876565 is a wasteful number, since it uses less digits than its factorization.

42019876565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42781.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 42019876565 in words is "forty-two billion, nineteen million, eight hundred seventy-six thousand, five hundred sixty-five".