64454526443 has 4 divisors (see below), whose sum is σ = 67846869960. Its totient is φ = 61062182928.

The previous prime is 64454526413. The next prime is 64454526457. The reversal of 64454526443 is 34462545446.

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 64454526443 - 2⁸ = 64454526187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64454526413) 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, 1696171730 + ... + 1696171767.

It is an arithmetic number, because the mean of its divisors is an integer number (16961717490).

Almost surely, 2^64454526443 is an apocalyptic number.

64454526443 is a deficient number, since it is larger than the sum of its proper divisors (3392343517).

64454526443 is a wasteful number, since it uses less digits than its factorization.

64454526443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392343516.

The product of its digits is 5529600, while the sum is 47.

The spelling of 64454526443 in words is "sixty-four billion, four hundred fifty-four million, five hundred twenty-six thousand, four hundred forty-three".