64138149348 has 48 divisors (see below), whose sum is σ = 184191611520. Its totient is φ = 16915555584.

The previous prime is 64138149289. The next prime is 64138149379. The reversal of 64138149348 is 84394183146.

It is a happy number.

It is a super-2 number, since 2×64138149348² (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 64138149348.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29366193 + ... + 29368376.

It is an arithmetic number, because the mean of its divisors is an integer number (3837325240).

Almost surely, 2^64138149348 is an apocalyptic number.

It is an amenable number.

64138149348 is an abundant number, since it is smaller than the sum of its proper divisors (120053462172).

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

64138149348 is a wasteful number, since it uses less digits than its factorization.

64138149348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58734596 (or 58734594 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The spelling of 64138149348 in words is "sixty-four billion, one hundred thirty-eight million, one hundred forty-nine thousand, three hundred forty-eight".