16162825649 has 2 divisors, whose sum is σ = 16162825650. Its totient is φ = 16162825648.

The previous prime is 16162825639. The next prime is 16162825669. The reversal of 16162825649 is 94652826161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15690067600 + 472758049 = 125260^2 + 21743^2 .

It is a cyclic number.

It is not a de Polignac number, because 16162825649 - 2²⁴ = 16146048433 is a prime.

It is a super-2 number, since 2×16162825649² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16162825597 and 16162825606.

It is not a weakly prime, because it can be changed into another prime (16162825639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081412824 + 8081412825.

It is an arithmetic number, because the mean of its divisors is an integer number (8081412825).

Almost surely, 2^16162825649 is an apocalyptic number.

It is an amenable number.

16162825649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16162825649 is an equidigital number, since it uses as much as digits as its factorization.

16162825649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The spelling of 16162825649 in words is "sixteen billion, one hundred sixty-two million, eight hundred twenty-five thousand, six hundred forty-nine".