42520644416 has 14 divisors (see below), whose sum is σ = 84376903890. Its totient is φ = 21260322176.

The previous prime is 42520644401. The next prime is 42520644427. The reversal of 42520644416 is 61444602524.

It can be written as a sum of positive squares in only one way, i.e., 34581121600 + 7939522816 = 185960^2 + 89104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42520644416.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332192471 + ... + 332192598.

Almost surely, 2^42520644416 is an apocalyptic number.

It is an amenable number.

42520644416 is a deficient number, since it is larger than the sum of its proper divisors (41856259474).

42520644416 is an equidigital number, since it uses as much as digits as its factorization.

42520644416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664385081 (or 664385071 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 42520644416 in words is "forty-two billion, five hundred twenty million, six hundred forty-four thousand, four hundred sixteen".