1623144640633 has 2 divisors, whose sum is σ = 1623144640634. Its totient is φ = 1623144640632.

The previous prime is 1623144640597. The next prime is 1623144640651. The reversal of 1623144640633 is 3360464413261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1284783711289 + 338360929344 = 1133483^2 + 581688^2 .

It is an emirp because it is prime and its reverse (3360464413261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1623144640633 - 2²¹ = 1623142543481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1623144640633.

It is not a weakly prime, because it can be changed into another prime (1623144640673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811572320316 + 811572320317.

It is an arithmetic number, because the mean of its divisors is an integer number (811572320317).

Almost surely, 2^{1623144640633} is an apocalyptic number.

It is an amenable number.

1623144640633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623144640633 is an equidigital number, since it uses as much as digits as its factorization.

1623144640633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 1623144640633 in words is "one trillion, six hundred twenty-three billion, one hundred forty-four million, six hundred forty thousand, six hundred thirty-three".