64332511523346 has 64 divisors (see below), whose sum is σ = 144194419428480. Its totient is φ = 18962683407360.

The previous prime is 64332511523281. The next prime is 64332511523353.

64332511523346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64332511523295 and 64332511523304.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5465160 + ... + 12590988.

It is an arithmetic number, because the mean of its divisors is an integer number (2253037803570).

Almost surely, 2^{64332511523346} is an apocalyptic number.

64332511523346 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64332511523346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72097209714240).

64332511523346 is an abundant number, since it is smaller than the sum of its proper divisors (79861907905134).

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

64332511523346 is a wasteful number, since it uses less digits than its factorization.

64332511523346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129579.

The product of its digits is 4665600, while the sum is 48.

It can be divided in two parts, 6433251 and 1523346, that added together give a palindrome (7956597).

The spelling of 64332511523346 in words is "sixty-four trillion, three hundred thirty-two billion, five hundred eleven million, five hundred twenty-three thousand, three hundred forty-six".