612543345203 has 2 divisors, whose sum is σ = 612543345204. Its totient is φ = 612543345202.

The previous prime is 612543345199. The next prime is 612543345221. The reversal of 612543345203 is 302543345216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612543345203 - 2² = 612543345199 is a prime.

It is a super-2 number, since 2×612543345203² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (612543345103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306271672601 + 306271672602.

It is an arithmetic number, because the mean of its divisors is an integer number (306271672602).

Almost surely, 2^612543345203 is an apocalyptic number.

612543345203 is a deficient number, since it is larger than the sum of its proper divisors (1).

612543345203 is an equidigital number, since it uses as much as digits as its factorization.

612543345203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 612543345203 in words is "six hundred twelve billion, five hundred forty-three million, three hundred forty-five thousand, two hundred three".