63423306709 has 4 divisors (see below), whose sum is σ = 72483779104. Its totient is φ = 54362834316.

The previous prime is 63423306707. The next prime is 63423306743. The reversal of 63423306709 is 90760332436.

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.

It is not a de Polignac number, because 63423306709 - 2¹ = 63423306707 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 (63423306707) 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, 4530236187 + ... + 4530236200.

It is an arithmetic number, because the mean of its divisors is an integer number (18120944776).

Almost surely, 2^63423306709 is an apocalyptic number.

It is an amenable number.

63423306709 is a deficient number, since it is larger than the sum of its proper divisors (9060472395).

63423306709 is an equidigital number, since it uses as much as digits as its factorization.

63423306709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060472394.

The product of its (nonzero) digits is 489888, while the sum is 43.

The spelling of 63423306709 in words is "sixty-three billion, four hundred twenty-three million, three hundred six thousand, seven hundred nine".