20143014441421 has 16 divisors (see below), whose sum is σ = 20470802503536. Its totient is φ = 19816649035776.

The previous prime is 20143014441401. The next prime is 20143014441479. The reversal of 20143014441421 is 12414441034102.

It can be written as a sum of positive squares in 8 ways, for example, as 3485278272100 + 16657736169321 = 1866890^2 + 4081389^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143014441421 - 2³⁷ = 20005575487949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143014441401) 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, 141948321 + ... + 142090153.

It is an arithmetic number, because the mean of its divisors is an integer number (1279425156471).

Almost surely, 2^{20143014441421} is an apocalyptic number.

It is an amenable number.

20143014441421 is a deficient number, since it is larger than the sum of its proper divisors (327788062115).

20143014441421 is a wasteful number, since it uses less digits than its factorization.

20143014441421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146832.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 20143014441421 its reverse (12414441034102), we get a palindrome (32557455475523).

The spelling of 20143014441421 in words is "twenty trillion, one hundred forty-three billion, fourteen million, four hundred forty-one thousand, four hundred twenty-one".