16523442137 has 8 divisors (see below), whose sum is σ = 16690033152. Its totient is φ = 16356910000.

The previous prime is 16523442097. The next prime is 16523442139. The reversal of 16523442137 is 73124432561.

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 16523442137 - 2⁶ = 16523442073 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 16523442137.

It is not an unprimeable number, because it can be changed into a prime (16523442139) 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, 745262 + ... + 767112.

It is an arithmetic number, because the mean of its divisors is an integer number (2086254144).

Almost surely, 2^16523442137 is an apocalyptic number.

It is an amenable number.

16523442137 is a deficient number, since it is larger than the sum of its proper divisors (166591015).

16523442137 is a wasteful number, since it uses less digits than its factorization.

16523442137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29439.

The product of its digits is 120960, while the sum is 38.

Adding to 16523442137 its reverse (73124432561), we get a palindrome (89647874698).

The spelling of 16523442137 in words is "sixteen billion, five hundred twenty-three million, four hundred forty-two thousand, one hundred thirty-seven".