30143748643 has 16 divisors (see below), whose sum is σ = 30502923840. Its totient is φ = 29787264000.

The previous prime is 30143748629. The next prime is 30143748647. The reversal of 30143748643 is 34684734103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30143748643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30143748643.

It is not an unprimeable number, because it can be changed into a prime (30143748647) 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, 32800138 + ... + 32801056.

It is an arithmetic number, because the mean of its divisors is an integer number (1906432740).

Almost surely, 2^30143748643 is an apocalyptic number.

30143748643 is a deficient number, since it is larger than the sum of its proper divisors (359175197).

30143748643 is a wasteful number, since it uses less digits than its factorization.

30143748643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 30143748643 in words is "thirty billion, one hundred forty-three million, seven hundred forty-eight thousand, six hundred forty-three".