1606324740401 has 4 divisors (see below), whose sum is σ = 1649738922612. Its totient is φ = 1562910558192.

The previous prime is 1606324740367. The next prime is 1606324740409. The reversal of 1606324740401 is 1040474236061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1362066389776 + 244258350625 = 1167076^2 + 494225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606324740401 - 2⁶ = 1606324740337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606324740409) 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, 21707091050 + ... + 21707091123.

It is an arithmetic number, because the mean of its divisors is an integer number (412434730653).

Almost surely, 2^{1606324740401} is an apocalyptic number.

It is an amenable number.

1606324740401 is a deficient number, since it is larger than the sum of its proper divisors (43414182211).

1606324740401 is an equidigital number, since it uses as much as digits as its factorization.

1606324740401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43414182210.

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 1606324740401 its reverse (1040474236061), we get a palindrome (2646798976462).

The spelling of 1606324740401 in words is "one trillion, six hundred six billion, three hundred twenty-four million, seven hundred forty thousand, four hundred one".