42564620464 has 20 divisors (see below), whose sum is σ = 82473013800. Its totient is φ = 21281262080.

The previous prime is 42564620431. The next prime is 42564620503. The reversal of 42564620464 is 46402646524.

It is a self number, because there is not a number n which added to its sum of digits gives 42564620464.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348987 + ... + 454885.

It is an arithmetic number, because the mean of its divisors is an integer number (4123650690).

Almost surely, 2^42564620464 is an apocalyptic number.

It is an amenable number.

42564620464 is a deficient number, since it is larger than the sum of its proper divisors (39908393336).

42564620464 is a wasteful number, since it uses less digits than its factorization.

42564620464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131028 (or 131022 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 42564620464 in words is "forty-two billion, five hundred sixty-four million, six hundred twenty thousand, four hundred sixty-four".