42064706660 has 24 divisors (see below), whose sum is σ = 89146309560. Its totient is φ = 16671515904.

The previous prime is 42064706659. The next prime is 42064706669. The reversal of 42064706660 is 6660746024.

It can be written as a sum of positive squares in 4 ways, for example, as 18133854244 + 23930852416 = 134662^2 + 154696^2 .

It is not an unprimeable number, because it can be changed into a prime (42064706669) 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, 9645689 + ... + 9650048.

It is an arithmetic number, because the mean of its divisors is an integer number (3714429565).

Almost surely, 2^42064706660 is an apocalyptic number.

It is an amenable number.

42064706660 is an abundant number, since it is smaller than the sum of its proper divisors (47081602900).

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

42064706660 is a wasteful number, since it uses less digits than its factorization.

42064706660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19295855 (or 19295853 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 42064706660 in words is "forty-two billion, sixty-four million, seven hundred six thousand, six hundred sixty".