64200432423 has 4 divisors (see below), whose sum is σ = 85600576568. Its totient is φ = 42800288280.

The previous prime is 64200432371. The next prime is 64200432497. The reversal of 64200432423 is 32423400246.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64200432423 - 2⁸ = 64200432167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64200431423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10700072068 + ... + 10700072073.

It is an arithmetic number, because the mean of its divisors is an integer number (21400144142).

Almost surely, 2^64200432423 is an apocalyptic number.

64200432423 is a deficient number, since it is larger than the sum of its proper divisors (21400144145).

64200432423 is a wasteful number, since it uses less digits than its factorization.

64200432423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400144144.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 64200432423 its reverse (32423400246), we get a palindrome (96623832669).

The spelling of 64200432423 in words is "sixty-four billion, two hundred million, four hundred thirty-two thousand, four hundred twenty-three".