64523504658943 has 8 divisors (see below), whose sum is σ = 70390418956416. Its totient is φ = 58656780552600.

The previous prime is 64523504658929. The next prime is 64523504659013. The reversal of 64523504658943 is 34985640532546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64523504658943 - 2¹³ = 64523504650751 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 (64523504658143) 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, 46837963 + ... + 48195868.

It is an arithmetic number, because the mean of its divisors is an integer number (8798802369552).

Almost surely, 2^{64523504658943} is an apocalyptic number.

64523504658943 is a deficient number, since it is larger than the sum of its proper divisors (5866914297473).

64523504658943 is a wasteful number, since it uses less digits than its factorization.

64523504658943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95095565.

The product of its (nonzero) digits is 373248000, while the sum is 64.

The spelling of 64523504658943 in words is "sixty-four trillion, five hundred twenty-three billion, five hundred four million, six hundred fifty-eight thousand, nine hundred forty-three".