64438470760 has 32 divisors (see below), whose sum is σ = 153515181960. Its totient is φ = 24259188736.

The previous prime is 64438470751. The next prime is 64438470781. The reversal of 64438470760 is 6707483446.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 60112251684 + 4326219076 = 245178^2 + 65774^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47380549 + ... + 47381908.

Almost surely, 2^64438470760 is an apocalyptic number.

It is an amenable number.

64438470760 is an abundant number, since it is smaller than the sum of its proper divisors (89076711200).

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

64438470760 is a wasteful number, since it uses less digits than its factorization.

64438470760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94762485 (or 94762481 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 49.

The spelling of 64438470760 in words is "sixty-four billion, four hundred thirty-eight million, four hundred seventy thousand, seven hundred sixty".