423053665632 has 216 divisors, whose sum is σ = 1314911687544. Its totient is φ = 128952225792.

The previous prime is 423053665621. The next prime is 423053665691. The reversal of 423053665632 is 236566350324.

423053665632 is a `hidden beast` number, since 4 + 2 + 3 + 0 + 5 + 3 + 6 + 6 + 5 + 632 = 666.

It is a super-3 number, since 3×423053665632³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5167288 + ... + 5248520.

It is an arithmetic number, because the mean of its divisors is an integer number (6087554109).

Almost surely, 2^423053665632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423053665632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657455843772).

423053665632 is an abundant number, since it is smaller than the sum of its proper divisors (891858021912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423053665632 is a wasteful number, since it uses less digits than its factorization.

423053665632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81382 (or 81358 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 45.

The spelling of 423053665632 in words is "four hundred twenty-three billion, fifty-three million, six hundred sixty-five thousand, six hundred thirty-two".