16518930061 has 2 divisors, whose sum is σ = 16518930062. Its totient is φ = 16518930060.

The previous prime is 16518930047. The next prime is 16518930097. The reversal of 16518930061 is 16003981561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16499402500 + 19527561 = 128450^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 16518930061 - 2⁹ = 16518929549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16518929996 and 16518930023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16518930031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8259465030 + 8259465031.

It is an arithmetic number, because the mean of its divisors is an integer number (8259465031).

Almost surely, 2^16518930061 is an apocalyptic number.

It is an amenable number.

16518930061 is a deficient number, since it is larger than the sum of its proper divisors (1).

16518930061 is an equidigital number, since it uses as much as digits as its factorization.

16518930061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 16518930061 in words is "sixteen billion, five hundred eighteen million, nine hundred thirty thousand, sixty-one".