1641694223467 has 2 divisors, whose sum is σ = 1641694223468. Its totient is φ = 1641694223466.

The previous prime is 1641694223441. The next prime is 1641694223551. The reversal of 1641694223467 is 7643224961461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641694223467 is a prime.

It is a super-2 number, since 2×1641694223467² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1641694233467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820847111733 + 820847111734.

It is an arithmetic number, because the mean of its divisors is an integer number (820847111734).

Almost surely, 2^{1641694223467} is an apocalyptic number.

1641694223467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641694223467 is an equidigital number, since it uses as much as digits as its factorization.

1641694223467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 55.

The spelling of 1641694223467 in words is "one trillion, six hundred forty-one billion, six hundred ninety-four million, two hundred twenty-three thousand, four hundred sixty-seven".