143661440373 has 16 divisors (see below), whose sum is σ = 208969284672. Its totient is φ = 87064544000.

The previous prime is 143661440327. The next prime is 143661440381. The reversal of 143661440373 is 373044166341.

It is a cyclic number.

It is not a de Polignac number, because 143661440373 - 2⁶ = 143661440309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143661441373) 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, 1247053 + ... + 1357373.

It is an arithmetic number, because the mean of its divisors is an integer number (13060580292).

Almost surely, 2^143661440373 is an apocalyptic number.

It is an amenable number.

143661440373 is a deficient number, since it is larger than the sum of its proper divisors (65307844299).

143661440373 is a wasteful number, since it uses less digits than its factorization.

143661440373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149796.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 143661440373 in words is "one hundred forty-three billion, six hundred sixty-one million, four hundred forty thousand, three hundred seventy-three".