612231421664 has 24 divisors (see below), whose sum is σ = 1209913634160. Its totient is φ = 304951768576.

The previous prime is 612231421643. The next prime is 612231421673. The reversal of 612231421664 is 466124132216.

612231421664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36364649 + ... + 36381480.

It is an arithmetic number, because the mean of its divisors is an integer number (50413068090).

Almost surely, 2^612231421664 is an apocalyptic number.

It is an amenable number.

612231421664 is a deficient number, since it is larger than the sum of its proper divisors (597682212496).

612231421664 is a wasteful number, since it uses less digits than its factorization.

612231421664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72746402 (or 72746394 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The spelling of 612231421664 in words is "six hundred twelve billion, two hundred thirty-one million, four hundred twenty-one thousand, six hundred sixty-four".