20101405453420 has 96 divisors (see below), whose sum is σ = 43083970715520. Its totient is φ = 7876183910400.

The previous prime is 20101405453397. The next prime is 20101405453429. The reversal of 20101405453420 is 2435450410102.

It is not an unprimeable number, because it can be changed into a prime (20101405453429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1593699034 + ... + 1593711646.

It is an arithmetic number, because the mean of its divisors is an integer number (448791361620).

Almost surely, 2^{20101405453420} is an apocalyptic number.

20101405453420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101405453420 is an abundant number, since it is smaller than the sum of its proper divisors (22982565262100).

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

20101405453420 is a wasteful number, since it uses less digits than its factorization.

20101405453420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075 (or 20073 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20101405453420 its reverse (2435450410102), we get a palindrome (22536855863522).

The spelling of 20101405453420 in words is "twenty trillion, one hundred one billion, four hundred five million, four hundred fifty-three thousand, four hundred twenty".