214529137721 has 8 divisors (see below), whose sum is σ = 217559160000. Its totient is φ = 211499351280.

The previous prime is 214529137709. The next prime is 214529137811. The reversal of 214529137721 is 127731925412.

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

It is a cyclic number.

It is not a de Polignac number, because 214529137721 - 2⁶ = 214529137657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214529137321) 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 7 ways as a sum of consecutive naturals, for example, 2636555 + ... + 2716703.

It is an arithmetic number, because the mean of its divisors is an integer number (27194895000).

Almost surely, 2^214529137721 is an apocalyptic number.

It is an amenable number.

214529137721 is a deficient number, since it is larger than the sum of its proper divisors (3030022279).

214529137721 is an equidigital number, since it uses as much as digits as its factorization.

214529137721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117919.

The product of its digits is 211680, while the sum is 44.

The spelling of 214529137721 in words is "two hundred fourteen billion, five hundred twenty-nine million, one hundred thirty-seven thousand, seven hundred twenty-one".