1621462316244 has 48 divisors (see below), whose sum is σ = 3800783347200. Its totient is φ = 538008764416.

The previous prime is 1621462316219. The next prime is 1621462316297. The reversal of 1621462316244 is 4426132641261.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1621462316196 and 1621462316205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4255192 + ... + 4620560.

It is an arithmetic number, because the mean of its divisors is an integer number (79182986400).

Almost surely, 2^{1621462316244} is an apocalyptic number.

It is an amenable number.

1621462316244 is an abundant number, since it is smaller than the sum of its proper divisors (2179321030956).

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

1621462316244 is a wasteful number, since it uses less digits than its factorization.

1621462316244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367072 (or 367070 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The spelling of 1621462316244 in words is "one trillion, six hundred twenty-one billion, four hundred sixty-two million, three hundred sixteen thousand, two hundred forty-four".