143388993449 has 16 divisors (see below), whose sum is σ = 161160959232. Its totient is φ = 126582189888.

The previous prime is 143388993427. The next prime is 143388993469. The reversal of 143388993449 is 944399883341.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143388993449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143388993469) 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, 1806884 + ... + 1884570.

It is an arithmetic number, because the mean of its divisors is an integer number (10072559952).

Almost surely, 2^143388993449 is an apocalyptic number.

It is an amenable number.

143388993449 is a deficient number, since it is larger than the sum of its proper divisors (17771965783).

143388993449 is a wasteful number, since it uses less digits than its factorization.

143388993449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83896.

The product of its digits is 80621568, while the sum is 65.

The spelling of 143388993449 in words is "one hundred forty-three billion, three hundred eighty-eight million, nine hundred ninety-three thousand, four hundred forty-nine".