2215621146553 has 2 divisors, whose sum is σ = 2215621146554. Its totient is φ = 2215621146552.

The previous prime is 2215621146521. The next prime is 2215621146587. The reversal of 2215621146553 is 3556411265122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2200603134249 + 15018012304 = 1483443^2 + 122548^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215621146553 - 2⁵ = 2215621146521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215621146593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107810573276 + 1107810573277.

It is an arithmetic number, because the mean of its divisors is an integer number (1107810573277).

Almost surely, 2^{2215621146553} is an apocalyptic number.

It is an amenable number.

2215621146553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215621146553 is an equidigital number, since it uses as much as digits as its factorization.

2215621146553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The spelling of 2215621146553 in words is "two trillion, two hundred fifteen billion, six hundred twenty-one million, one hundred forty-six thousand, five hundred fifty-three".