64604868447 has 24 divisors (see below), whose sum is σ = 101410759296. Its totient is φ = 36472276848.

The previous prime is 64604868437. The next prime is 64604868451. The reversal of 64604868447 is 74486840646.

64604868447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64604868447 - 2⁷ = 64604868319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64604868437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2635323 + ... + 2659724.

It is an arithmetic number, because the mean of its divisors is an integer number (4225448304).

Almost surely, 2^64604868447 is an apocalyptic number.

64604868447 is a deficient number, since it is larger than the sum of its proper divisors (36805890849).

64604868447 is a wasteful number, since it uses less digits than its factorization.

64604868447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295147 (or 5295140 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 57.

The spelling of 64604868447 in words is "sixty-four billion, six hundred four million, eight hundred sixty-eight thousand, four hundred forty-seven".