64413554136 has 128 divisors (see below), whose sum is σ = 167815065600. Its totient is φ = 20588267520.

The previous prime is 64413554129. The next prime is 64413554167. The reversal of 64413554136 is 63145531446.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13882905 + ... + 13887543.

It is an arithmetic number, because the mean of its divisors is an integer number (1311055200).

Almost surely, 2^64413554136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64413554136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83907532800).

64413554136 is an abundant number, since it is smaller than the sum of its proper divisors (103401511464).

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

64413554136 is a wasteful number, since it uses less digits than its factorization.

64413554136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4925 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 64413554136 in words is "sixty-four billion, four hundred thirteen million, five hundred fifty-four thousand, one hundred thirty-six".