20355124420284 has 24 divisors (see below), whose sum is σ = 47520594197328. Its totient is φ = 6781426632960.

The previous prime is 20355124420283. The next prime is 20355124420327. The reversal of 20355124420284 is 48202442155302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355124420283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451831597 + ... + 451876644.

It is an arithmetic number, because the mean of its divisors is an integer number (1980024758222).

Almost surely, 2^{20355124420284} is an apocalyptic number.

It is an amenable number.

20355124420284 is an abundant number, since it is smaller than the sum of its proper divisors (27165469777044).

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

20355124420284 is a wasteful number, since it uses less digits than its factorization.

20355124420284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903710125 (or 903710123 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 42.

Adding to 20355124420284 its reverse (48202442155302), we get a palindrome (68557566575586).

The spelling of 20355124420284 in words is "twenty trillion, three hundred fifty-five billion, one hundred twenty-four million, four hundred twenty thousand, two hundred eighty-four".