64959484479552 has 1680 divisors, whose sum is σ = 226565328033792. Its totient is φ = 18325103247360.

The previous prime is 64959484479541. The next prime is 64959484479601. The reversal of 64959484479552 is 25597448495946.

64959484479552 is a `hidden beast` number, since 6 + 4 + 9 + 5 + 9 + 484 + 47 + 95 + 5 + 2 = 666.

It is a super-2 number, since 2×64959484479552² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 115380966823 + ... + 115380967385.

Almost surely, 2^{64959484479552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64959484479552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113282664016896).

64959484479552 is an abundant number, since it is smaller than the sum of its proper divisors (161605843554240).

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

64959484479552 is a wasteful number, since it uses less digits than its factorization.

64959484479552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 786 counting only the distinct ones).

The product of its digits is 15676416000, while the sum is 81.

The spelling of 64959484479552 in words is "sixty-four trillion, nine hundred fifty-nine billion, four hundred eighty-four million, four hundred seventy-nine thousand, five hundred fifty-two".