64522356818380 has 24 divisors (see below), whose sum is σ = 139867818652800. Its totient is φ = 24976396187520.

The previous prime is 64522356818363. The next prime is 64522356818453. The reversal of 64522356818380 is 8381865322546.

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, 52034158105 + ... + 52034159344.

It is an arithmetic number, because the mean of its divisors is an integer number (5827825777200).

Almost surely, 2^{64522356818380} is an apocalyptic number.

It is an amenable number.

64522356818380 is an abundant number, since it is smaller than the sum of its proper divisors (75345461834420).

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

64522356818380 is a wasteful number, since it uses less digits than its factorization.

64522356818380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104068317489 (or 104068317487 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 61.

The spelling of 64522356818380 in words is "sixty-four trillion, five hundred twenty-two billion, three hundred fifty-six million, eight hundred eighteen thousand, three hundred eighty".