6401423453 has 4 divisors (see below), whose sum is σ = 6537624000. Its totient is φ = 6265222908.

The previous prime is 6401423447. The next prime is 6401423467. The reversal of 6401423453 is 3543241046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3543241046 = 2 ⋅1771620523.

It is a cyclic number.

It is not a de Polignac number, because 6401423453 - 2¹⁸ = 6401161309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401423153) 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, 68100203 + ... + 68100296.

It is an arithmetic number, because the mean of its divisors is an integer number (1634406000).

Almost surely, 2^6401423453 is an apocalyptic number.

It is an amenable number.

6401423453 is a deficient number, since it is larger than the sum of its proper divisors (136200547).

6401423453 is a wasteful number, since it uses less digits than its factorization.

6401423453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136200546.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 6401423453 is about 80008.8960866228. The cubic root of 6401423453 is about 1856.7731708154.

Adding to 6401423453 its reverse (3543241046), we get a palindrome (9944664499).

The spelling of 6401423453 in words is "six billion, four hundred one million, four hundred twenty-three thousand, four hundred fifty-three".