612478320018 has 16 divisors (see below), whose sum is σ = 1224987393216. Its totient is φ = 204154314480.

The previous prime is 612478319989. The next prime is 612478320061. The reversal of 612478320018 is 810023874216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018321 + ... + 1503972.

It is an arithmetic number, because the mean of its divisors is an integer number (76561712076).

Almost surely, 2^612478320018 is an apocalyptic number.

612478320018 is an abundant number, since it is smaller than the sum of its proper divisors (612509073198).

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

612478320018 is a wasteful number, since it uses less digits than its factorization.

612478320018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562769.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 612478320018 in words is "six hundred twelve billion, four hundred seventy-eight million, three hundred twenty thousand, eighteen".