1662223520434 has 4 divisors (see below), whose sum is σ = 2493335280654. Its totient is φ = 831111760216.

The previous prime is 1662223520411. The next prime is 1662223520437. The reversal of 1662223520434 is 4340253222661.

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

It can be written as a sum of positive squares in only one way, i.e., 1607689594809 + 54533925625 = 1267947^2 + 233525^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1662223520437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415555880107 + ... + 415555880110.

Almost surely, 2^{1662223520434} is an apocalyptic number.

1662223520434 is a deficient number, since it is larger than the sum of its proper divisors (831111760220).

1662223520434 is an equidigital number, since it uses as much as digits as its factorization.

1662223520434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831111760219.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 1662223520434 in words is "one trillion, six hundred sixty-two billion, two hundred twenty-three million, five hundred twenty thousand, four hundred thirty-four".