612164805815 has 16 divisors (see below), whose sum is σ = 774267012000. Its totient is φ = 463922938752.

The previous prime is 612164805743. The next prime is 612164805821. The reversal of 612164805815 is 518508461216.

It is a cyclic number.

It is not a de Polignac number, because 612164805815 - 2¹⁰ = 612164804791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612164805815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39820865 + ... + 39836234.

It is an arithmetic number, because the mean of its divisors is an integer number (48391688250).

Almost surely, 2^612164805815 is an apocalyptic number.

612164805815 is a deficient number, since it is larger than the sum of its proper divisors (162102206185).

612164805815 is a wasteful number, since it uses less digits than its factorization.

612164805815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79657186.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 612164805815 in words is "six hundred twelve billion, one hundred sixty-four million, eight hundred five thousand, eight hundred fifteen".