29678305143 has 4 divisors (see below), whose sum is σ = 39571073528. Its totient is φ = 19785536760.

The previous prime is 29678305133. The next prime is 29678305183. The reversal of 29678305143 is 34150387692.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29678305143 - 2⁴ = 29678305127 is a prime.

It is a super-2 number, since 2×29678305143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29678305092 and 29678305101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29678305123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4946384188 + ... + 4946384193.

It is an arithmetic number, because the mean of its divisors is an integer number (9892768382).

It is a 1-persistent number, because it is pandigital, but 2⋅29678305143 = 59356610286 is not.

Almost surely, 2^29678305143 is an apocalyptic number.

29678305143 is a deficient number, since it is larger than the sum of its proper divisors (9892768385).

29678305143 is an equidigital number, since it uses as much as digits as its factorization.

29678305143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892768384.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 29678305143 in words is "twenty-nine billion, six hundred seventy-eight million, three hundred five thousand, one hundred forty-three".