29978514893443 has 8 divisors (see below), whose sum is σ = 30701745004896. Its totient is φ = 29263645824000.

The previous prime is 29978514893429. The next prime is 29978514893507. The reversal of 29978514893443 is 34439841587992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29978514893443 is a prime.

It is a super-2 number, since 2×29978514893443² (a number of 28 digits) contains 22 as substring.

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 29978514893443.

It is not an unprimeable number, because it can be changed into a prime (29978514894443) 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, 2090253246 + ... + 2090267587.

It is an arithmetic number, because the mean of its divisors is an integer number (3837718125612).

Almost surely, 2^{29978514893443} is an apocalyptic number.

29978514893443 is a deficient number, since it is larger than the sum of its proper divisors (723230111453).

29978514893443 is a wasteful number, since it uses less digits than its factorization.

29978514893443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180521005.

The product of its digits is 1881169920, while the sum is 76.

The spelling of 29978514893443 in words is "twenty-nine trillion, nine hundred seventy-eight billion, five hundred fourteen million, eight hundred ninety-three thousand, four hundred forty-three".