612811230945 has 16 divisors (see below), whose sum is σ = 981954892032. Its totient is φ = 326347015680.

The previous prime is 612811230917. The next prime is 612811230959. The reversal of 612811230945 is 549032118216.

It is not a de Polignac number, because 612811230945 - 2⁷ = 612811230817 is a prime.

It is a super-2 number, since 2×612811230945² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 612811230897 and 612811230906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30342121 + ... + 30362310.

It is an arithmetic number, because the mean of its divisors is an integer number (61372180752).

Almost surely, 2^612811230945 is an apocalyptic number.

It is an amenable number.

612811230945 is a deficient number, since it is larger than the sum of its proper divisors (369143661087).

612811230945 is a wasteful number, since it uses less digits than its factorization.

612811230945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60705112.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 612811230945 in words is "six hundred twelve billion, eight hundred eleven million, two hundred thirty thousand, nine hundred forty-five".