64204241663 has 4 divisors (see below), whose sum is σ = 64487079960. Its totient is φ = 63921403368.

The previous prime is 64204241617. The next prime is 64204241671. The reversal of 64204241663 is 36614240246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64204241663 - 2²⁶ = 64137132799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64204211663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141418808 + ... + 141419261.

It is an arithmetic number, because the mean of its divisors is an integer number (16121769990).

Almost surely, 2^64204241663 is an apocalyptic number.

64204241663 is a deficient number, since it is larger than the sum of its proper divisors (282838297).

64204241663 is a wasteful number, since it uses less digits than its factorization.

64204241663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282838296.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 64204241663 in words is "sixty-four billion, two hundred four million, two hundred forty-one thousand, six hundred sixty-three".