42440266464 has 24 divisors (see below), whose sum is σ = 111405699720. Its totient is φ = 14146755456.

The previous prime is 42440266457. The next prime is 42440266469. The reversal of 42440266464 is 46466204424.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440266469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221042959 + ... + 221043150.

It is an arithmetic number, because the mean of its divisors is an integer number (4641904155).

Almost surely, 2^42440266464 is an apocalyptic number.

It is an amenable number.

42440266464 is an abundant number, since it is smaller than the sum of its proper divisors (68965433256).

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

42440266464 is a wasteful number, since it uses less digits than its factorization.

42440266464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442086122 (or 442086114 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 42440266464 in words is "forty-two billion, four hundred forty million, two hundred sixty-six thousand, four hundred sixty-four".