143420665652 has 24 divisors (see below), whose sum is σ = 273911141280. Its totient is φ = 65165484960.

The previous prime is 143420665649. The next prime is 143420665673. The reversal of 143420665652 is 256566024341.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530183 + ... + 753614.

It is an arithmetic number, because the mean of its divisors is an integer number (11412964220).

Almost surely, 2^143420665652 is an apocalyptic number.

It is an amenable number.

143420665652 is a deficient number, since it is larger than the sum of its proper divisors (130490475628).

143420665652 is a wasteful number, since it uses less digits than its factorization.

143420665652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286351 (or 1286349 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

Adding to 143420665652 its reverse (256566024341), we get a palindrome (399986689993).

The spelling of 143420665652 in words is "one hundred forty-three billion, four hundred twenty million, six hundred sixty-five thousand, six hundred fifty-two".