64519514928 has 160 divisors (see below), whose sum is σ = 213915237120. Its totient is φ = 18401264640.

The previous prime is 64519514921. The next prime is 64519514953. The reversal of 64519514928 is 82941591546.

64519514928 is a `hidden beast` number, since 6 + 451 + 95 + 14 + 92 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (64519514921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318550 + ... + 480117.

It is an arithmetic number, because the mean of its divisors is an integer number (1336970232).

Almost surely, 2^64519514928 is an apocalyptic number.

64519514928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64519514928 is an abundant number, since it is smaller than the sum of its proper divisors (149395722192).

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

64519514928 is a wasteful number, since it uses less digits than its factorization.

64519514928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798712 (or 798700 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 64519514928 in words is "sixty-four billion, five hundred nineteen million, five hundred fourteen thousand, nine hundred twenty-eight".