20440454531630 has 32 divisors (see below), whose sum is σ = 42093057875904. Its totient is φ = 7000802032896.

The previous prime is 20440454531603. The next prime is 20440454531647. The reversal of 20440454531630 is 3613545404402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153137117 + ... + 153270536.

It is an arithmetic number, because the mean of its divisors is an integer number (1315408058622).

Almost surely, 2^{20440454531630} is an apocalyptic number.

20440454531630 is an abundant number, since it is smaller than the sum of its proper divisors (21652603344274).

20440454531630 is a wasteful number, since it uses less digits than its factorization.

20440454531630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306408620.

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 20440454531630 in words is "twenty trillion, four hundred forty billion, four hundred fifty-four million, five hundred thirty-one thousand, six hundred thirty".