64487086307968 has 64 divisors (see below), whose sum is σ = 134064084597120. Its totient is φ = 30839798133760.

The previous prime is 64487086307947. The next prime is 64487086308053. The reversal of 64487086307968 is 86970368078446.

64487086307968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 64487086307894 and 64487086307903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49019046 + ... + 50317402.

It is an arithmetic number, because the mean of its divisors is an integer number (2094751321830).

Almost surely, 2^{64487086307968} is an apocalyptic number.

It is an amenable number.

64487086307968 is an abundant number, since it is smaller than the sum of its proper divisors (69576998289152).

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

64487086307968 is a wasteful number, since it uses less digits than its factorization.

64487086307968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315265 (or 1315253 counting only the distinct ones).

The product of its (nonzero) digits is 2341011456, while the sum is 76.

The spelling of 64487086307968 in words is "sixty-four trillion, four hundred eighty-seven billion, eighty-six million, three hundred seven thousand, nine hundred sixty-eight".