143454942447 has 8 divisors (see below), whose sum is σ = 191285228544. Its totient is φ = 95630642328.

The previous prime is 143454942443. The next prime is 143454942469. The reversal of 143454942447 is 744249454341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143454942447 - 2² = 143454942443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143454942447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143454942443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440273 + ... + 1536650.

It is an arithmetic number, because the mean of its divisors is an integer number (23910653568).

Almost surely, 2^143454942447 is an apocalyptic number.

143454942447 is a deficient number, since it is larger than the sum of its proper divisors (47830286097).

143454942447 is a wasteful number, since it uses less digits than its factorization.

143454942447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992989.

The product of its digits is 7741440, while the sum is 51.

The spelling of 143454942447 in words is "one hundred forty-three billion, four hundred fifty-four million, nine hundred forty-two thousand, four hundred forty-seven".