143643221142452 has 24 divisors (see below), whose sum is σ = 253296332409120. Its totient is φ = 71272848235680.

The previous prime is 143643221142433. The next prime is 143643221142497. The reversal of 143643221142452 is 254241122346341.

It is a super-3 number, since 3×143643221142452³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79248074 + ... + 81040382.

It is an arithmetic number, because the mean of its divisors is an integer number (10554013850380).

Almost surely, 2^{143643221142452} is an apocalyptic number.

It is an amenable number.

143643221142452 is a deficient number, since it is larger than the sum of its proper divisors (109653111266668).

143643221142452 is a wasteful number, since it uses less digits than its factorization.

143643221142452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945391 (or 1945389 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 44.

Adding to 143643221142452 its reverse (254241122346341), we get a palindrome (397884343488793).

The spelling of 143643221142452 in words is "one hundred forty-three trillion, six hundred forty-three billion, two hundred twenty-one million, one hundred forty-two thousand, four hundred fifty-two".