64124672118 has 64 divisors (see below), whose sum is σ = 141451246272. Its totient is φ = 19259596800.

The previous prime is 64124672099. The next prime is 64124672119. The reversal of 64124672118 is 81127642146.

It is a super-2 number, since 2×64124672118² (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 64124672118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64124672119) 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 31 ways as a sum of consecutive naturals, for example, 494268 + ... + 610368.

It is an arithmetic number, because the mean of its divisors is an integer number (2210175723).

Almost surely, 2^64124672118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64124672118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70725623136).

64124672118 is an abundant number, since it is smaller than the sum of its proper divisors (77326574154).

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

64124672118 is a wasteful number, since it uses less digits than its factorization.

64124672118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116289.

The product of its digits is 129024, while the sum is 42.

The spelling of 64124672118 in words is "sixty-four billion, one hundred twenty-four million, six hundred seventy-two thousand, one hundred eighteen".