612443321460 has 120 divisors (see below), whose sum is σ = 1923189492840. Its totient is φ = 163153979136.

The previous prime is 612443321459. The next prime is 612443321471. The reversal of 612443321460 is 64123344216.

612443321460 is a `hidden beast` number, since 6 + 1 + 2 + 4 + 433 + 214 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 155407831524 + 457035489936 = 394218^2 + 676044^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1425546 + ... + 1804734.

It is an arithmetic number, because the mean of its divisors is an integer number (16026579107).

Almost surely, 2^612443321460 is an apocalyptic number.

612443321460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612443321460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961594746420).

612443321460 is an abundant number, since it is smaller than the sum of its proper divisors (1310746171380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612443321460 is a wasteful number, since it uses less digits than its factorization.

612443321460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380207 (or 380196 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 612443321460 its reverse (64123344216), we get a palindrome (676566665676).

The spelling of 612443321460 in words is "six hundred twelve billion, four hundred forty-three million, three hundred twenty-one thousand, four hundred sixty".