64943604001 has 4 divisors (see below), whose sum is σ = 65076958912. Its totient is φ = 64810249092.

The previous prime is 64943603987. The next prime is 64943604049. The reversal of 64943604001 is 10040634946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10040634946 = 2 ⋅5020317473.

It is a cyclic number.

It is not a de Polignac number, because 64943604001 - 2¹³ = 64943595809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64943608001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66676725 + ... + 66677698.

It is an arithmetic number, because the mean of its divisors is an integer number (16269239728).

Almost surely, 2^64943604001 is an apocalyptic number.

It is an amenable number.

64943604001 is a deficient number, since it is larger than the sum of its proper divisors (133354911).

64943604001 is a wasteful number, since it uses less digits than its factorization.

64943604001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133354910.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 64943604001 in words is "sixty-four billion, nine hundred forty-three million, six hundred four thousand, one".