64143234146 has 16 divisors (see below), whose sum is σ = 97344866880. Its totient is φ = 31696370160.

The previous prime is 64143234131. The next prime is 64143234149.

64143234146 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64143234146² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64143234149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265886 + ... + 446073.

It is an arithmetic number, because the mean of its divisors is an integer number (6084054180).

Almost surely, 2^64143234146 is an apocalyptic number.

64143234146 is a deficient number, since it is larger than the sum of its proper divisors (33201632734).

64143234146 is a wasteful number, since it uses less digits than its factorization.

64143234146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712489.

The product of its digits is 165888, while the sum is 38.

The spelling of 64143234146 in words is "sixty-four billion, one hundred forty-three million, two hundred thirty-four thousand, one hundred forty-six".