1641520356367 has 2 divisors, whose sum is σ = 1641520356368. Its totient is φ = 1641520356366.

The previous prime is 1641520356323. The next prime is 1641520356449. The reversal of 1641520356367 is 7636530251461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641520356367 - 2¹¹ = 1641520354319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1641520356367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641520356317) 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, 820760178183 + 820760178184.

It is an arithmetic number, because the mean of its divisors is an integer number (820760178184).

Almost surely, 2^{1641520356367} is an apocalyptic number.

1641520356367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641520356367 is an equidigital number, since it uses as much as digits as its factorization.

1641520356367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 1641520356367 in words is "one trillion, six hundred forty-one billion, five hundred twenty million, three hundred fifty-six thousand, three hundred sixty-seven".