64134443146 has 4 divisors (see below), whose sum is σ = 96201664722. Its totient is φ = 32067221572.

The previous prime is 64134443143. The next prime is 64134443159.

64134443146 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48603052521 + 15531390625 = 220461^2 + 124625^2 .

It is a super-2 number, since 2×64134443146² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64134443099 and 64134443108.

It is not an unprimeable number, because it can be changed into a prime (64134443143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16033610785 + ... + 16033610788.

Almost surely, 2^64134443146 is an apocalyptic number.

64134443146 is a deficient number, since it is larger than the sum of its proper divisors (32067221576).

64134443146 is a wasteful number, since it uses less digits than its factorization.

64134443146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32067221575.

The product of its digits is 331776, while the sum is 40.

The spelling of 64134443146 in words is "sixty-four billion, one hundred thirty-four million, four hundred forty-three thousand, one hundred forty-six".