161502253333 has 8 divisors (see below), whose sum is σ = 171007309080. Its totient is φ = 151997744640.

The previous prime is 161502253327. The next prime is 161502253349. The reversal of 161502253333 is 333352205161.

It can be written as a sum of positive squares in 4 ways, for example, as 131607151729 + 29895101604 = 362777^2 + 172902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161502253333 - 2¹⁷ = 161502122261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161502253313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577753 + ... + 810433.

It is an arithmetic number, because the mean of its divisors is an integer number (21375913635).

Almost surely, 2^161502253333 is an apocalyptic number.

It is an amenable number.

161502253333 is a deficient number, since it is larger than the sum of its proper divisors (9505055747).

161502253333 is a wasteful number, since it uses less digits than its factorization.

161502253333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273527.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 161502253333 its reverse (333352205161), we get a palindrome (494854458494).

The spelling of 161502253333 in words is "one hundred sixty-one billion, five hundred two million, two hundred fifty-three thousand, three hundred thirty-three".