1621265352283 has 2 divisors, whose sum is σ = 1621265352284. Its totient is φ = 1621265352282.

The previous prime is 1621265352197. The next prime is 1621265352313. The reversal of 1621265352283 is 3822535621261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1621265352283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1621265350283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810632676141 + 810632676142.

It is an arithmetic number, because the mean of its divisors is an integer number (810632676142).

Almost surely, 2^{1621265352283} is an apocalyptic number.

1621265352283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1621265352283 is an equidigital number, since it uses as much as digits as its factorization.

1621265352283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 46.

The spelling of 1621265352283 in words is "one trillion, six hundred twenty-one billion, two hundred sixty-five million, three hundred fifty-two thousand, two hundred eighty-three".