20421132053054 has 8 divisors (see below), whose sum is σ = 30631764854880. Its totient is φ = 10210543768096.

The previous prime is 20421132053051. The next prime is 20421132053071. The reversal of 20421132053054 is 45035023112402.

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 20421132053054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421132053051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9957734 + ... + 11832105.

It is an arithmetic number, because the mean of its divisors is an integer number (3828970606860).

Almost surely, 2^{20421132053054} is an apocalyptic number.

20421132053054 is a deficient number, since it is larger than the sum of its proper divisors (10210632801826).

20421132053054 is a wasteful number, since it uses less digits than its factorization.

20421132053054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22258434.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20421132053054 its reverse (45035023112402), we get a palindrome (65456155165456).

The spelling of 20421132053054 in words is "twenty trillion, four hundred twenty-one billion, one hundred thirty-two million, fifty-three thousand, fifty-four".