612231421665 has 16 divisors (see below), whose sum is σ = 980183694528. Its totient is φ = 326318951616.

The previous prime is 612231421643. The next prime is 612231421673. The reversal of 612231421665 is 566124132216.

It is not a de Polignac number, because 612231421665 - 2¹² = 612231417569 is a prime.

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, 12754827 + ... + 12802736.

It is an arithmetic number, because the mean of its divisors is an integer number (61261480908).

Almost surely, 2^612231421665 is an apocalyptic number.

It is an amenable number.

612231421665 is a deficient number, since it is larger than the sum of its proper divisors (367952272863).

612231421665 is a wasteful number, since it uses less digits than its factorization.

612231421665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559168.

The product of its digits is 103680, while the sum is 39.

The spelling of 612231421665 in words is "six hundred twelve billion, two hundred thirty-one million, four hundred twenty-one thousand, six hundred sixty-five".