64423232445 has 64 divisors (see below), whose sum is σ = 122630860800. Its totient is φ = 28467728640.

The previous prime is 64423232443. The next prime is 64423232449. The reversal of 64423232445 is 54423232446.

It is not a de Polignac number, because 64423232445 - 2¹ = 64423232443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64423232443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20635 + ... + 359544.

It is an arithmetic number, because the mean of its divisors is an integer number (1916107200).

Almost surely, 2^64423232445 is an apocalyptic number.

64423232445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64423232445 is a deficient number, since it is larger than the sum of its proper divisors (58207628355).

64423232445 is a wasteful number, since it uses less digits than its factorization.

64423232445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380290.

The product of its digits is 552960, while the sum is 39.

Subtracting from 64423232445 its reverse (54423232446), we obtain a palindrome (9999999999).

The spelling of 64423232445 in words is "sixty-four billion, four hundred twenty-three million, two hundred thirty-two thousand, four hundred forty-five".