64415536206 has 64 divisors (see below), whose sum is σ = 151295109120. Its totient is φ = 17897518080.

The previous prime is 64415536187. The next prime is 64415536231. The reversal of 64415536206 is 60263551446.

It is a super-2 number, since 2×64415536206² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3223915 + ... + 3243833.

It is an arithmetic number, because the mean of its divisors is an integer number (2363986080).

Almost surely, 2^64415536206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64415536206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75647554560).

64415536206 is an abundant number, since it is smaller than the sum of its proper divisors (86879572914).

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

64415536206 is a wasteful number, since it uses less digits than its factorization.

64415536206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22049.

The product of its (nonzero) digits is 518400, while the sum is 42.

It can be divided in two parts, 644155 and 36206, that added together give a triangular number (680361 = T₁₁₆₆).

The spelling of 64415536206 in words is "sixty-four billion, four hundred fifteen million, five hundred thirty-six thousand, two hundred six".