64172427106 has 16 divisors (see below), whose sum is σ = 99750534840. Its totient is φ = 30926085120.

The previous prime is 64172427089. The next prime is 64172427113. The reversal of 64172427106 is 60172427146.

It can be written as a sum of positive squares in 4 ways, for example, as 57650411025 + 6522016081 = 240105^2 + 80759^2 .

It is a super-3 number, since 3×64172427106³ (a number of 33 digits) contains 333 as substring.

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, 925305 + ... + 992236.

Almost surely, 2^64172427106 is an apocalyptic number.

64172427106 is a deficient number, since it is larger than the sum of its proper divisors (35578107734).

64172427106 is a wasteful number, since it uses less digits than its factorization.

64172427106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918149.

The product of its (nonzero) digits is 112896, while the sum is 40.

Adding to 64172427106 its sum of digits (40), we get a palindrome (64172427146).

The spelling of 64172427106 in words is "sixty-four billion, one hundred seventy-two million, four hundred twenty-seven thousand, one hundred six".