612320445165 has 128 divisors (see below), whose sum is σ = 1167601526784. Its totient is φ = 270115200000.

The previous prime is 612320445137. The next prime is 612320445197. The reversal of 612320445165 is 561544023216.

It is not a de Polignac number, because 612320445165 - 2⁵ = 612320445133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 49172190 + ... + 49184640.

It is an arithmetic number, because the mean of its divisors is an integer number (9121886928).

Almost surely, 2^612320445165 is an apocalyptic number.

612320445165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

612320445165 is a deficient number, since it is larger than the sum of its proper divisors (555281081619).

612320445165 is a wasteful number, since it uses less digits than its factorization.

612320445165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12811.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 612320445165 in words is "six hundred twelve billion, three hundred twenty million, four hundred forty-five thousand, one hundred sixty-five".