1645422210067 has 4 divisors (see below), whose sum is σ = 1645425247240. Its totient is φ = 1645419172896.

The previous prime is 1645422210049. The next prime is 1645422210101. The reversal of 1645422210067 is 7600122245461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1645422210067 - 2⁷ = 1645422209939 is a prime.

It is a super-2 number, since 2×1645422210067² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1645422210037) 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 in 3 ways as a sum of consecutive naturals, for example, 459942 + ... + 1871467.

It is an arithmetic number, because the mean of its divisors is an integer number (411356311810).

Almost surely, 2^{1645422210067} is an apocalyptic number.

1645422210067 is a deficient number, since it is larger than the sum of its proper divisors (3037173).

1645422210067 is an equidigital number, since it uses as much as digits as its factorization.

1645422210067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037172.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 1645422210067 in words is "one trillion, six hundred forty-five billion, four hundred twenty-two million, two hundred ten thousand, sixty-seven".