64141438266 has 24 divisors (see below), whose sum is σ = 139084432500. Its totient is φ = 21363353856.

The previous prime is 64141438261. The next prime is 64141438289. The reversal of 64141438266 is 66283414146.

It can be written as a sum of positive squares in 2 ways, for example, as 63569032641 + 572405625 = 252129^2 + 23925^2 .

It is a super-2 number, since 2×64141438266² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64141438261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1404025 + ... + 1448988.

Almost surely, 2^64141438266 is an apocalyptic number.

64141438266 is an abundant number, since it is smaller than the sum of its proper divisors (74942994234).

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

64141438266 is a wasteful number, since it uses less digits than its factorization.

64141438266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854270 (or 2854267 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 64141438266 in words is "sixty-four billion, one hundred forty-one million, four hundred thirty-eight thousand, two hundred sixty-six".