29379451643 has 4 divisors (see below), whose sum is σ = 29382707400. Its totient is φ = 29376195888.

The previous prime is 29379451639. The next prime is 29379451667. The reversal of 29379451643 is 34615497392.

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

It is a cyclic number.

It is not a de Polignac number, because 29379451643 - 2² = 29379451639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29379451243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614305 + ... + 1632402.

It is an arithmetic number, because the mean of its divisors is an integer number (7345676850).

Almost surely, 2^29379451643 is an apocalyptic number.

29379451643 is a deficient number, since it is larger than the sum of its proper divisors (3255757).

29379451643 is an equidigital number, since it uses as much as digits as its factorization.

29379451643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255756.

The product of its digits is 4898880, while the sum is 53.

The spelling of 29379451643 in words is "twenty-nine billion, three hundred seventy-nine million, four hundred fifty-one thousand, six hundred forty-three".