161415450001 has 4 divisors (see below), whose sum is σ = 173832023092. Its totient is φ = 148998876912.

The previous prime is 161415449983. The next prime is 161415450011. The reversal of 161415450001 is 100054514161.

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 53536704400 + 107878745601 = 231380^2 + 328449^2 .

It is a cyclic number.

It is not a de Polignac number, because 161415450001 - 2¹⁷ = 161415318929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161415450011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6208286526 + ... + 6208286551.

It is an arithmetic number, because the mean of its divisors is an integer number (43458005773).

Almost surely, 2^161415450001 is an apocalyptic number.

It is an amenable number.

161415450001 is a deficient number, since it is larger than the sum of its proper divisors (12416573091).

161415450001 is a wasteful number, since it uses less digits than its factorization.

161415450001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12416573090.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 161415450001 its reverse (100054514161), we get a palindrome (261469964162).

The spelling of 161415450001 in words is "one hundred sixty-one billion, four hundred fifteen million, four hundred fifty thousand, one".