64779022095648 has 48 divisors (see below), whose sum is σ = 194337066288960. Its totient is φ = 18508292027136.

The previous prime is 64779022095629. The next prime is 64779022095649. The reversal of 64779022095648 is 84659022097746.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (64779022095649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48198676483 + ... + 48198677826.

It is an arithmetic number, because the mean of its divisors is an integer number (4048688881020).

Almost surely, 2^{64779022095648} is an apocalyptic number.

It is an amenable number.

64779022095648 is an abundant number, since it is smaller than the sum of its proper divisors (129558044193312).

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

64779022095648 is a wasteful number, since it uses less digits than its factorization.

64779022095648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96397354329 (or 96397354321 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 69.

The spelling of 64779022095648 in words is "sixty-four trillion, seven hundred seventy-nine billion, twenty-two million, ninety-five thousand, six hundred forty-eight".