423554504522450 has 72 divisors (see below), whose sum is σ = 916439077434132. Its totient is φ = 145217826324480.

The previous prime is 423554504522407. The next prime is 423554504522459. The reversal of 423554504522450 is 54225405455324.

It can be written as a sum of positive squares in 6 ways, for example, as 135266739158929 + 288287765363521 = 11630423^2 + 16979039^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (423554504522459) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 521191634 + ... + 522003666.

Almost surely, 2^{423554504522450} is an apocalyptic number.

423554504522450 is an abundant number, since it is smaller than the sum of its proper divisors (492884572911682).

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

423554504522450 is a wasteful number, since it uses less digits than its factorization.

423554504522450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024956 (or 1024944 counting only the distinct ones).

The product of its (nonzero) digits is 19200000, while the sum is 50.

Adding to 423554504522450 its reverse (54225405455324), we get a palindrome (477779909977774).

The spelling of 423554504522450 in words is "four hundred twenty-three trillion, five hundred fifty-four billion, five hundred four million, five hundred twenty-two thousand, four hundred fifty".