612231421663 has 32 divisors (see below), whose sum is σ = 672835775040. Its totient is φ = 554840064000.

The previous prime is 612231421643. The next prime is 612231421673. The reversal of 612231421663 is 366124132216.

It is a cyclic number.

It is not a de Polignac number, because 612231421663 - 2⁵ = 612231421631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612231421643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14724343 + ... + 14765863.

It is an arithmetic number, because the mean of its divisors is an integer number (21026117970).

Almost surely, 2^612231421663 is an apocalyptic number.

612231421663 is a deficient number, since it is larger than the sum of its proper divisors (60604353377).

612231421663 is a wasteful number, since it uses less digits than its factorization.

612231421663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41899.

The product of its digits is 62208, while the sum is 37.

Adding to 612231421663 its reverse (366124132216), we get a palindrome (978355553879).

The spelling of 612231421663 in words is "six hundred twelve billion, two hundred thirty-one million, four hundred twenty-one thousand, six hundred sixty-three".