64505473932108 has 54 divisors (see below), whose sum is σ = 165440443960372. Its totient is φ = 19547020572640.

The previous prime is 64505473932101. The next prime is 64505473932167. The reversal of 64505473932108 is 80123937450546.

It is not an unprimeable number, because it can be changed into a prime (64505473932101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 305937010 + ... + 306147782.

It is a 1-persistent number, because it is pandigital, but 2⋅64505473932108 = 129010947864216 is not.

Almost surely, 2^{64505473932108} is an apocalyptic number.

It is an amenable number.

64505473932108 is an abundant number, since it is smaller than the sum of its proper divisors (100934970028264).

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

64505473932108 is an frugal number, since it uses more digits than its factorization.

64505473932108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421575 (or 210789 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 57.

The spelling of 64505473932108 in words is "sixty-four trillion, five hundred five billion, four hundred seventy-three million, nine hundred thirty-two thousand, one hundred eight".