146678673821 has 8 divisors (see below), whose sum is σ = 147045900000. Its totient is φ = 146311537680.

The previous prime is 146678673763. The next prime is 146678673839. The reversal of 146678673821 is 128376876641.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146678673821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146678670821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4234430 + ... + 4268928.

It is an arithmetic number, because the mean of its divisors is an integer number (18380737500).

Almost surely, 2^146678673821 is an apocalyptic number.

It is an amenable number.

146678673821 is a deficient number, since it is larger than the sum of its proper divisors (367226179).

146678673821 is a wasteful number, since it uses less digits than its factorization.

146678673821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45019.

The product of its digits is 16257024, while the sum is 59.

The spelling of 146678673821 in words is "one hundred forty-six billion, six hundred seventy-eight million, six hundred seventy-three thousand, eight hundred twenty-one".