143450620660221 has 32 divisors (see below), whose sum is σ = 220527718192128. Its totient is φ = 81245684378880.

The previous prime is 143450620660189. The next prime is 143450620660343. The reversal of 143450620660221 is 122066026054341.

It is a happy number.

It is not a de Polignac number, because 143450620660221 - 2⁵ = 143450620660189 is a prime.

It is a super-4 number, since 4×143450620660221⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143450620660621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445932366 + ... + 446253936.

It is an arithmetic number, because the mean of its divisors is an integer number (6891491193504).

Almost surely, 2^{143450620660221} is an apocalyptic number.

It is an amenable number.

143450620660221 is a deficient number, since it is larger than the sum of its proper divisors (77077097531907).

143450620660221 is a wasteful number, since it uses less digits than its factorization.

143450620660221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509681.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 143450620660221 in words is "one hundred forty-three trillion, four hundred fifty billion, six hundred twenty million, six hundred sixty thousand, two hundred twenty-one".