99699755799699 has 64 divisors (see below), whose sum is σ = 166432217333760. Its totient is φ = 58438533780000.

The previous prime is 99699755799691. The next prime is 99699755799737.

99699755799699 is a `hidden beast` number, since 9 + 9 + 6 + 9 + 9 + 7 + 5 + 579 + 9 + 6 + 9 + 9 = 666.

99699755799699 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99699755799699 - 2³ = 99699755799691 is a prime.

It is a super-2 number, since 2×99699755799699² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99699755799699.

It is not an unprimeable number, because it can be changed into a prime (99699755799691) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11426424 + ... + 18164874.

It is an arithmetic number, because the mean of its divisors is an integer number (2600503395840).

Almost surely, 2^{99699755799699} is an apocalyptic number.

99699755799699 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99699755799699 is a deficient number, since it is larger than the sum of its proper divisors (66732461534061).

99699755799699 is a wasteful number, since it uses less digits than its factorization.

99699755799699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740109 (or 6740103 counting only the distinct ones).

The product of its digits is 1898360396100, while the sum is 108.

The spelling of 99699755799699 in words is "ninety-nine trillion, six hundred ninety-nine billion, seven hundred fifty-five million, seven hundred ninety-nine thousand, six hundred ninety-nine".