161402281337 has 8 divisors (see below), whose sum is σ = 176760336672. Its totient is φ = 146158412800.

The previous prime is 161402281321. The next prime is 161402281357. The reversal of 161402281337 is 733182204161.

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 161402281337 - 2⁴ = 161402281321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161402281337.

It is not an unprimeable number, because it can be changed into a prime (161402281307) 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, 28543739 + ... + 28549392.

It is an arithmetic number, because the mean of its divisors is an integer number (22095042084).

Almost surely, 2^161402281337 is an apocalyptic number.

It is an amenable number.

161402281337 is a deficient number, since it is larger than the sum of its proper divisors (15358055335).

161402281337 is a wasteful number, since it uses less digits than its factorization.

161402281337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57093399.

The product of its (nonzero) digits is 48384, while the sum is 38.

Adding to 161402281337 its reverse (733182204161), we get a palindrome (894584485498).

The spelling of 161402281337 in words is "one hundred sixty-one billion, four hundred two million, two hundred eighty-one thousand, three hundred thirty-seven".