621034471346563 has 16 divisors (see below), whose sum is σ = 638638616975040. Its totient is φ = 603473935824000.

The previous prime is 621034471346557. The next prime is 621034471346581. The reversal of 621034471346563 is 365643174430126.

It is a happy number.

621034471346563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 621034471346563 - 2¹³ = 621034471338371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621034471346503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89427493 + ... + 96121513.

It is an arithmetic number, because the mean of its divisors is an integer number (39914913560940).

Almost surely, 2^{621034471346563} is an apocalyptic number.

621034471346563 is a deficient number, since it is larger than the sum of its proper divisors (17604145628477).

621034471346563 is a wasteful number, since it uses less digits than its factorization.

621034471346563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697278.

The product of its (nonzero) digits is 26127360, while the sum is 55.

The spelling of 621034471346563 in words is "six hundred twenty-one trillion, thirty-four billion, four hundred seventy-one million, three hundred forty-six thousand, five hundred sixty-three".