423320329978 has 64 divisors (see below), whose sum is σ = 790746727680. Its totient is φ = 165491200512.

The previous prime is 423320329933. The next prime is 423320330003. The reversal of 423320329978 is 879923023324.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32826900 + ... + 32839792.

It is an arithmetic number, because the mean of its divisors is an integer number (12355417620).

Almost surely, 2^423320329978 is an apocalyptic number.

423320329978 is a deficient number, since it is larger than the sum of its proper divisors (367426397702).

423320329978 is a wasteful number, since it uses less digits than its factorization.

423320329978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15031.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 423320329978 in words is "four hundred twenty-three billion, three hundred twenty million, three hundred twenty-nine thousand, nine hundred seventy-eight".