42660440664 has 64 divisors (see below), whose sum is σ = 111997175040. Its totient is φ = 13515216000.

The previous prime is 42660440663. The next prime is 42660440677. The reversal of 42660440664 is 46604406624.

42660440664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42660440663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159462 + ... + 332789.

It is an arithmetic number, because the mean of its divisors is an integer number (1749955860).

Almost surely, 2^42660440664 is an apocalyptic number.

It is an amenable number.

42660440664 is an abundant number, since it is smaller than the sum of its proper divisors (69336734376).

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

42660440664 is a wasteful number, since it uses less digits than its factorization.

42660440664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492440 (or 492436 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 42660440664 in words is "forty-two billion, six hundred sixty million, four hundred forty thousand, six hundred sixty-four".