64138143138 has 8 divisors (see below), whose sum is σ = 128276286288. Its totient is φ = 21379381044.

The previous prime is 64138143119. The next prime is 64138143149. The reversal of 64138143138 is 83134183146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

64138143138 is an admirable number.

It is a super-2 number, since 2×64138143138² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64138143138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5344845256 + ... + 5344845267.

It is an arithmetic number, because the mean of its divisors is an integer number (16034535786).

Almost surely, 2^64138143138 is an apocalyptic number.

64138143138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64138143138 is a wasteful number, since it uses less digits than its factorization.

64138143138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689690528.

The product of its digits is 165888, while the sum is 42.

The spelling of 64138143138 in words is "sixty-four billion, one hundred thirty-eight million, one hundred forty-three thousand, one hundred thirty-eight".