423632640730 has 16 divisors (see below), whose sum is σ = 821195580744. Its totient is φ = 156418205760.

The previous prime is 423632640721. The next prime is 423632640779. The reversal of 423632640730 is 37046236324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 327134809849 + 96497830881 = 571957^2 + 310641^2 .

It is a super-2 number, since 2×423632640730² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629356181 + ... + 1629356440.

Almost surely, 2^423632640730 is an apocalyptic number.

423632640730 is a deficient number, since it is larger than the sum of its proper divisors (397562940014).

423632640730 is a wasteful number, since it uses less digits than its factorization.

423632640730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258712641.

The product of its (nonzero) digits is 435456, while the sum is 40.

The spelling of 423632640730 in words is "four hundred twenty-three billion, six hundred thirty-two million, six hundred forty thousand, seven hundred thirty".