63144163021 has 4 divisors (see below), whose sum is σ = 63567949500. Its totient is φ = 62720376544.

The previous prime is 63144163003. The next prime is 63144163031. The reversal of 63144163021 is 12036144136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4652740521 + 58491422500 = 68211^2 + 241850^2 .

It is a cyclic number.

It is not a de Polignac number, because 63144163021 - 2¹¹ = 63144160973 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 (63144163031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211893016 + ... + 211893313.

It is an arithmetic number, because the mean of its divisors is an integer number (15891987375).

Almost surely, 2^63144163021 is an apocalyptic number.

It is an amenable number.

63144163021 is a deficient number, since it is larger than the sum of its proper divisors (423786479).

63144163021 is a wasteful number, since it uses less digits than its factorization.

63144163021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423786478.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 63144163021 in words is "sixty-three billion, one hundred forty-four million, one hundred sixty-three thousand, twenty-one".