64825484220 has 288 divisors, whose sum is σ = 233399083008. Its totient is φ = 14795177472.

The previous prime is 64825484201. The next prime is 64825484279. The reversal of 64825484220 is 2248452846.

64825484220 is a `hidden beast` number, since 6 + 4 + 82 + 548 + 4 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36978864 + ... + 36980616.

Almost surely, 2^64825484220 is an apocalyptic number.

64825484220 is a gapful number since it is divisible by the number (60) 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 64825484220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116699541504).

64825484220 is an abundant number, since it is smaller than the sum of its proper divisors (168573598788).

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

64825484220 is a wasteful number, since it uses less digits than its factorization.

64825484220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 45.

The spelling of 64825484220 in words is "sixty-four billion, eight hundred twenty-five million, four hundred eighty-four thousand, two hundred twenty".