164345622253403 has 4 divisors (see below), whose sum is σ = 166039907019000. Its totient is φ = 162651337487808.

The previous prime is 164345622253363. The next prime is 164345622253451. The reversal of 164345622253403 is 304352226543461.

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 164345622253403 - 2²⁰ = 164345621204827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164345622253103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847142382653 + ... + 847142382846.

It is an arithmetic number, because the mean of its divisors is an integer number (41509976754750).

Almost surely, 2^{164345622253403} is an apocalyptic number.

164345622253403 is a deficient number, since it is larger than the sum of its proper divisors (1694284765597).

164345622253403 is an equidigital number, since it uses as much as digits as its factorization.

164345622253403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694284765596.

The product of its (nonzero) digits is 12441600, while the sum is 50.

Adding to 164345622253403 its reverse (304352226543461), we get a palindrome (468697848796864).

The spelling of 164345622253403 in words is "one hundred sixty-four trillion, three hundred forty-five billion, six hundred twenty-two million, two hundred fifty-three thousand, four hundred three".