20281424401567 has 16 divisors (see below), whose sum is σ = 23978191003200. Its totient is φ = 16784520480000.

The previous prime is 20281424401531. The next prime is 20281424401571. The reversal of 20281424401567 is 76510442418202.

It is a happy number.

It is not a de Polignac number, because 20281424401567 - 2²³ = 20281416012959 is a prime.

It is a super-2 number, since 2×20281424401567² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20281424401517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58614067 + ... + 58959067.

It is an arithmetic number, because the mean of its divisors is an integer number (1498636937700).

Almost surely, 2^{20281424401567} is an apocalyptic number.

20281424401567 is a deficient number, since it is larger than the sum of its proper divisors (3696766601633).

20281424401567 is a wasteful number, since it uses less digits than its factorization.

20281424401567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634626.

The product of its (nonzero) digits is 860160, while the sum is 46.

Adding to 20281424401567 its reverse (76510442418202), we get a palindrome (96791866819769).

The spelling of 20281424401567 in words is "twenty trillion, two hundred eighty-one billion, four hundred twenty-four million, four hundred one thousand, five hundred sixty-seven".