215454021234 has 8 divisors (see below), whose sum is σ = 430908042480. Its totient is φ = 71818007076.

The previous prime is 215454021229. The next prime is 215454021271. The reversal of 215454021234 is 432120454512.

215454021234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

215454021234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 215454021195 and 215454021204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17954501764 + ... + 17954501775.

It is an arithmetic number, because the mean of its divisors is an integer number (53863505310).

Almost surely, 2^215454021234 is an apocalyptic number.

215454021234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215454021234 is a wasteful number, since it uses less digits than its factorization.

215454021234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35909003544.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 215454021234 its reverse (432120454512), we get a palindrome (647574475746).

The spelling of 215454021234 in words is "two hundred fifteen billion, four hundred fifty-four million, twenty-one thousand, two hundred thirty-four".