5621067215621 has 64 divisors (see below), whose sum is σ = 6992267950080. Its totient is φ = 4447609344000.

The previous prime is 5621067215591. The next prime is 5621067215707. The reversal of 5621067215621 is 1265127601265.

It is a cyclic number.

It is not a de Polignac number, because 5621067215621 - 2¹⁸ = 5621066953477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621061215621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140475065 + ... + 140515073.

It is an arithmetic number, because the mean of its divisors is an integer number (109254186720).

Almost surely, 2^{5621067215621} is an apocalyptic number.

It is an amenable number.

5621067215621 is a deficient number, since it is larger than the sum of its proper divisors (1371200734459).

5621067215621 is a wasteful number, since it uses less digits than its factorization.

5621067215621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40878.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 5621067215621 in words is "five trillion, six hundred twenty-one billion, sixty-seven million, two hundred fifteen thousand, six hundred twenty-one".