214454878646 has 4 divisors (see below), whose sum is σ = 321682317972. Its totient is φ = 107227439322.

The previous prime is 214454878633. The next prime is 214454878669. The reversal of 214454878646 is 646878454412.

214454878646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 53613719660 + ... + 53613719663.

It is an arithmetic number, because the mean of its divisors is an integer number (80420579493).

Almost surely, 2^214454878646 is an apocalyptic number.

214454878646 is a deficient number, since it is larger than the sum of its proper divisors (107227439326).

214454878646 is a wasteful number, since it uses less digits than its factorization.

214454878646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107227439325.

The product of its digits is 41287680, while the sum is 59.

The spelling of 214454878646 in words is "two hundred fourteen billion, four hundred fifty-four million, eight hundred seventy-eight thousand, six hundred forty-six".