1623562404481 has 2 divisors, whose sum is σ = 1623562404482. Its totient is φ = 1623562404480.

The previous prime is 1623562404463. The next prime is 1623562404491. The reversal of 1623562404481 is 1844042653261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368921060081 + 254641344400 = 1170009^2 + 504620^2 .

It is an emirp because it is prime and its reverse (1844042653261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1623562404481 - 2¹³ = 1623562396289 is a prime.

It is a super-2 number, since 2×1623562404481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1623562404461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811781202240 + 811781202241.

It is an arithmetic number, because the mean of its divisors is an integer number (811781202241).

Almost surely, 2^{1623562404481} is an apocalyptic number.

It is an amenable number.

1623562404481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623562404481 is an equidigital number, since it uses as much as digits as its factorization.

1623562404481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 1623562404481 in words is "one trillion, six hundred twenty-three billion, five hundred sixty-two million, four hundred four thousand, four hundred eighty-one".