64195707443 has 4 divisors (see below), whose sum is σ = 73366522800. Its totient is φ = 55024892088.

The previous prime is 64195707437. The next prime is 64195707461. The reversal of 64195707443 is 34470759146.

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 64195707443 - 2¹⁴ = 64195691059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64195707391 and 64195707400.

It is not an unprimeable number, because it can be changed into a prime (64195737443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4585407668 + ... + 4585407681.

It is an arithmetic number, because the mean of its divisors is an integer number (18341630700).

Almost surely, 2^64195707443 is an apocalyptic number.

64195707443 is a deficient number, since it is larger than the sum of its proper divisors (9170815357).

64195707443 is an equidigital number, since it uses as much as digits as its factorization.

64195707443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9170815356.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 64195707443 in words is "sixty-four billion, one hundred ninety-five million, seven hundred seven thousand, four hundred forty-three".