64406024219 has 4 divisors (see below), whose sum is σ = 64406691096. Its totient is φ = 64405357344.

The previous prime is 64406024213. The next prime is 64406024273. The reversal of 64406024219 is 91242060446.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64406024219 is a prime.

It is a super-2 number, since 2×64406024219² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64406024213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157694 + ... + 392019.

It is an arithmetic number, because the mean of its divisors is an integer number (16101672774).

Almost surely, 2^64406024219 is an apocalyptic number.

64406024219 is a deficient number, since it is larger than the sum of its proper divisors (666877).

64406024219 is a wasteful number, since it uses less digits than its factorization.

64406024219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666876.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 64406024219 in words is "sixty-four billion, four hundred six million, twenty-four thousand, two hundred nineteen".