20450015663254 has 8 divisors (see below), whose sum is σ = 31177892732688. Its totient is φ = 10057384752360.

The previous prime is 20450015663219. The next prime is 20450015663267. The reversal of 20450015663254 is 45236651005402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20450015663254.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83811539482 + ... + 83811539725.

It is an arithmetic number, because the mean of its divisors is an integer number (3897236591586).

Almost surely, 2^{20450015663254} is an apocalyptic number.

20450015663254 is a deficient number, since it is larger than the sum of its proper divisors (10727877069434).

20450015663254 is a wasteful number, since it uses less digits than its factorization.

20450015663254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167623079270.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 20450015663254 its reverse (45236651005402), we get a palindrome (65686666668656).

The spelling of 20450015663254 in words is "twenty trillion, four hundred fifty billion, fifteen million, six hundred sixty-three thousand, two hundred fifty-four".