20214121678 has 8 divisors (see below), whose sum is σ = 31060723680. Its totient is φ = 9860547120.

The previous prime is 20214121673. The next prime is 20214121687. The reversal of 20214121678 is 87612141202.

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

It is a super-2 number, since 2×20214121678² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214121673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123256758 + ... + 123256921.

It is an arithmetic number, because the mean of its divisors is an integer number (3882590460).

Almost surely, 2^20214121678 is an apocalyptic number.

20214121678 is a deficient number, since it is larger than the sum of its proper divisors (10846602002).

20214121678 is a wasteful number, since it uses less digits than its factorization.

20214121678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246513722.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 20214121678 in words is "twenty billion, two hundred fourteen million, one hundred twenty-one thousand, six hundred seventy-eight".