64666104477048 has 24 divisors (see below), whose sum is σ = 175137366292200. Its totient is φ = 21555368158992.

The previous prime is 64666104477031. The next prime is 64666104477071. The reversal of 64666104477048 is 84077440166646.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 449070169908 + ... + 449070170051.

It is an arithmetic number, because the mean of its divisors is an integer number (7297390262175).

Almost surely, 2^{64666104477048} is an apocalyptic number.

It is an amenable number.

64666104477048 is an abundant number, since it is smaller than the sum of its proper divisors (110471261815152).

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

64666104477048 is a wasteful number, since it uses less digits than its factorization.

64666104477048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898140339971 (or 898140339964 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 63.

The spelling of 64666104477048 in words is "sixty-four trillion, six hundred sixty-six billion, one hundred four million, four hundred seventy-seven thousand, forty-eight".