64522357768208 has 40 divisors (see below), whose sum is σ = 126304121669880. Its totient is φ = 31927762944000.

The previous prime is 64522357768159. The next prime is 64522357768217. The reversal of 64522357768208 is 80286775322546.

It can be written as a sum of positive squares in 4 ways, for example, as 7108579780864 + 57413777987344 = 2666192^2 + 7577188^2 .

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, 61762208 + ... + 62798208.

It is an arithmetic number, because the mean of its divisors is an integer number (3157603041747).

Almost surely, 2^{64522357768208} is an apocalyptic number.

It is an amenable number.

64522357768208 is a deficient number, since it is larger than the sum of its proper divisors (61781763901672).

64522357768208 is a wasteful number, since it uses less digits than its factorization.

64522357768208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076235 (or 1076229 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 65.

The spelling of 64522357768208 in words is "sixty-four trillion, five hundred twenty-two billion, three hundred fifty-seven million, seven hundred sixty-eight thousand, two hundred eight".