99616261799 has 2 divisors, whose sum is σ = 99616261800. Its totient is φ = 99616261798.

The previous prime is 99616261697. The next prime is 99616261813. The reversal of 99616261799 is 99716261699.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99616261799 - 2⁸ = 99616261543 is a prime.

It is a super-2 number, since 2×99616261799² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99616281799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49808130899 + 49808130900.

It is an arithmetic number, because the mean of its divisors is an integer number (49808130900).

Almost surely, 2^99616261799 is an apocalyptic number.

99616261799 is a deficient number, since it is larger than the sum of its proper divisors (1).

99616261799 is an equidigital number, since it uses as much as digits as its factorization.

99616261799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19840464, while the sum is 65.

The spelling of 99616261799 in words is "ninety-nine billion, six hundred sixteen million, two hundred sixty-one thousand, seven hundred ninety-nine".