99808182077 has 4 divisors (see below), whose sum is σ = 101499846240. Its totient is φ = 98116517916.

The previous prime is 99808182073. The next prime is 99808182101. The reversal of 99808182077 is 77028180899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99808182077 - 2² = 99808182073 is a prime.

It is a super-3 number, since 3×99808182077³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 1691664103 = 99808182077 / (9 + 9 + 8 + 0 + 8 + 1 + 8 + 2 + 0 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99808182073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845831993 + ... + 845832110.

It is an arithmetic number, because the mean of its divisors is an integer number (25374961560).

Almost surely, 2^99808182077 is an apocalyptic number.

It is an amenable number.

99808182077 is a deficient number, since it is larger than the sum of its proper divisors (1691664163).

99808182077 is a wasteful number, since it uses less digits than its factorization.

99808182077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691664162.

The product of its (nonzero) digits is 4064256, while the sum is 59.

The spelling of 99808182077 in words is "ninety-nine billion, eight hundred eight million, one hundred eighty-two thousand, seventy-seven".