16246134521 has 2 divisors, whose sum is σ = 16246134522. Its totient is φ = 16246134520.

The previous prime is 16246134511. The next prime is 16246134589. The reversal of 16246134521 is 12543164261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16215220921 + 30913600 = 127339^2 + 5560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16246134521 is a prime.

It is not a weakly prime, because it can be changed into another prime (16246134511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8123067260 + 8123067261.

It is an arithmetic number, because the mean of its divisors is an integer number (8123067261).

Almost surely, 2^16246134521 is an apocalyptic number.

It is an amenable number.

16246134521 is a deficient number, since it is larger than the sum of its proper divisors (1).

16246134521 is an equidigital number, since it uses as much as digits as its factorization.

16246134521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

Adding to 16246134521 its reverse (12543164261), we get a palindrome (28789298782).

The spelling of 16246134521 in words is "sixteen billion, two hundred forty-six million, one hundred thirty-four thousand, five hundred twenty-one".