64170421060 has 24 divisors (see below), whose sum is σ = 139404709080. Its totient is φ = 24783058944.

The previous prime is 64170420989. The next prime is 64170421087. The reversal of 64170421060 is 6012407146.

It can be written as a sum of positive squares in 4 ways, for example, as 487879744 + 63682541316 = 22088^2 + 252354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55318749 + ... + 55319908.

It is an arithmetic number, because the mean of its divisors is an integer number (5808529545).

Almost surely, 2^64170421060 is an apocalyptic number.

It is an amenable number.

64170421060 is an abundant number, since it is smaller than the sum of its proper divisors (75234288020).

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

64170421060 is a wasteful number, since it uses less digits than its factorization.

64170421060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110638695 (or 110638693 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 64170421060 in words is "sixty-four billion, one hundred seventy million, four hundred twenty-one thousand, sixty".