64169018532864 has 880 divisors, whose sum is σ = 232115516721792. Its totient is φ = 17237849407488.

The previous prime is 64169018532841. The next prime is 64169018532869. The reversal of 64169018532864 is 46823581096146.

64169018532864 is a `hidden beast` number, since 6 + 4 + 1 + 6 + 9 + 0 + 18 + 532 + 86 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (64169018532869) 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 79 ways as a sum of consecutive naturals, for example, 11716086094 + ... + 11716091570.

Almost surely, 2^{64169018532864} is an apocalyptic number.

64169018532864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64169018532864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116057758360896).

64169018532864 is an abundant number, since it is smaller than the sum of its proper divisors (167946498188928).

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

64169018532864 is a wasteful number, since it uses less digits than its factorization.

64169018532864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720 (or 6693 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 64169018532864 in words is "sixty-four trillion, one hundred sixty-nine billion, eighteen million, five hundred thirty-two thousand, eight hundred sixty-four".