1209830620824 has 640 divisors, whose sum is σ = 4004453376000. Its totient is φ = 334189649664.

The previous prime is 1209830620807. The next prime is 1209830620877. The reversal of 1209830620824 is 4280260389021.

1209830620824 is a `hidden beast` number, since 12 + 0 + 9 + 8 + 3 + 0 + 620 + 8 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1209830620824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5329650199 + ... + 5329650425.

It is an arithmetic number, because the mean of its divisors is an integer number (6256958400).

Almost surely, 2^{1209830620824} is an apocalyptic number.

1209830620824 is a gapful number since it is divisible by the number (14) 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 1209830620824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002226688000).

1209830620824 is an abundant number, since it is smaller than the sum of its proper divisors (2794622755176).

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

1209830620824 is a wasteful number, since it uses less digits than its factorization.

1209830620824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 1209830620824 in words is "one trillion, two hundred nine billion, eight hundred thirty million, six hundred twenty thousand, eight hundred twenty-four".