16199739877 has 2 divisors, whose sum is σ = 16199739878. Its totient is φ = 16199739876.

The previous prime is 16199739869. The next prime is 16199739923. The reversal of 16199739877 is 77893799161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13754832961 + 2444906916 = 117281^2 + 49446^2 .

It is an emirp because it is prime and its reverse (77893799161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16199739877 - 2³ = 16199739869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16199739817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8099869938 + 8099869939.

It is an arithmetic number, because the mean of its divisors is an integer number (8099869939).

Almost surely, 2^16199739877 is an apocalyptic number.

It is an amenable number.

16199739877 is a deficient number, since it is larger than the sum of its proper divisors (1).

16199739877 is an equidigital number, since it uses as much as digits as its factorization.

16199739877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36006768, while the sum is 67.

The spelling of 16199739877 in words is "sixteen billion, one hundred ninety-nine million, seven hundred thirty-nine thousand, eight hundred seventy-seven".