20350121651153 has 16 divisors (see below), whose sum is σ = 23892856604160. Its totient is φ = 16966556675136.

The previous prime is 20350121651117. The next prime is 20350121651161. The reversal of 20350121651153 is 35115612105302.

It is a cyclic number.

It is not a de Polignac number, because 20350121651153 - 2⁸ = 20350121650897 is a prime.

It is a super-2 number, since 2×20350121651153² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350121650153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10626713 + ... + 12394646.

It is an arithmetic number, because the mean of its divisors is an integer number (1493303537760).

Almost surely, 2^{20350121651153} is an apocalyptic number.

It is an amenable number.

20350121651153 is a deficient number, since it is larger than the sum of its proper divisors (3542734953007).

20350121651153 is a wasteful number, since it uses less digits than its factorization.

20350121651153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23024816.

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 20350121651153 its reverse (35115612105302), we get a palindrome (55465733756455).

The spelling of 20350121651153 in words is "twenty trillion, three hundred fifty billion, one hundred twenty-one million, six hundred fifty-one thousand, one hundred fifty-three".