42449807660 has 24 divisors (see below), whose sum is σ = 96001873296. Its totient is φ = 15673775040.

The previous prime is 42449807641. The next prime is 42449807669. The reversal of 42449807660 is 6670894424.

It is a junction number, because it is equal to n+sod(n) for n = 42449807599 and 42449807608.

It is not an unprimeable number, because it can be changed into a prime (42449807669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81633986 + ... + 81634505.

It is an arithmetic number, because the mean of its divisors is an integer number (4000078054).

Almost surely, 2^42449807660 is an apocalyptic number.

It is an amenable number.

42449807660 is an abundant number, since it is smaller than the sum of its proper divisors (53552065636).

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

42449807660 is a wasteful number, since it uses less digits than its factorization.

42449807660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163268513 (or 163268511 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 42449807660 in words is "forty-two billion, four hundred forty-nine million, eight hundred seven thousand, six hundred sixty".