164303432155403 has 4 divisors (see below), whose sum is σ = 164914225583760. Its totient is φ = 163692638727048.

The previous prime is 164303432155363. The next prime is 164303432155417. The reversal of 164303432155403 is 304551234303461.

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 164303432155403 - 2⁶ = 164303432155339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164303432155453) 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, 305396713775 + ... + 305396714312.

It is an arithmetic number, because the mean of its divisors is an integer number (41228556395940).

Almost surely, 2^{164303432155403} is an apocalyptic number.

164303432155403 is a deficient number, since it is larger than the sum of its proper divisors (610793428357).

164303432155403 is an equidigital number, since it uses as much as digits as its factorization.

164303432155403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610793428356.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 164303432155403 its reverse (304551234303461), we get a palindrome (468854666458864).

The spelling of 164303432155403 in words is "one hundred sixty-four trillion, three hundred three billion, four hundred thirty-two million, one hundred fifty-five thousand, four hundred three".