64015064220 has 24 divisors (see below), whose sum is σ = 179242179984. Its totient is φ = 17070683776.

The previous prime is 64015064207. The next prime is 64015064257. The reversal of 64015064220 is 2246051046.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533458809 + ... + 533458928.

It is an arithmetic number, because the mean of its divisors is an integer number (7468424166).

Almost surely, 2^64015064220 is an apocalyptic number.

64015064220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64015064220 is an abundant number, since it is smaller than the sum of its proper divisors (115227115764).

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

64015064220 is a wasteful number, since it uses less digits than its factorization.

64015064220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066917749 (or 1066917747 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 64015064220 in words is "sixty-four billion, fifteen million, sixty-four thousand, two hundred twenty".