2162821309628 has 96 divisors (see below), whose sum is σ = 4408065177600. Its totient is φ = 909428083200.

The previous prime is 2162821309609. The next prime is 2162821309687. The reversal of 2162821309628 is 8269031282612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235571198 + ... + 235580378.

It is an arithmetic number, because the mean of its divisors is an integer number (45917345600).

Almost surely, 2^{2162821309628} is an apocalyptic number.

2162821309628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2162821309628 is an abundant number, since it is smaller than the sum of its proper divisors (2245243867972).

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

2162821309628 is a wasteful number, since it uses less digits than its factorization.

2162821309628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9931 (or 9929 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 2162821309628 in words is "two trillion, one hundred sixty-two billion, eight hundred twenty-one million, three hundred nine thousand, six hundred twenty-eight".