612505345205 has 32 divisors (see below), whose sum is σ = 800264634624. Its totient is φ = 447346400256.

The previous prime is 612505345183. The next prime is 612505345237. The reversal of 612505345205 is 502543505216.

It is a cyclic number.

It is not a de Polignac number, because 612505345205 - 2⁸ = 612505344949 is a prime.

It is a congruent number.

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, 3340832 + ... + 3519398.

It is an arithmetic number, because the mean of its divisors is an integer number (25008269832).

Almost surely, 2^612505345205 is an apocalyptic number.

612505345205 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

612505345205 is a deficient number, since it is larger than the sum of its proper divisors (187759289419).

612505345205 is a wasteful number, since it uses less digits than its factorization.

612505345205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179165.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 612505345205 in words is "six hundred twelve billion, five hundred five million, three hundred forty-five thousand, two hundred five".