99687689141 has 8 divisors (see below), whose sum is σ = 100302456600. Its totient is φ = 99073364992.

The previous prime is 99687689113. The next prime is 99687689197. The reversal of 99687689141 is 14198678699.

It can be written as a sum of positive squares in 4 ways, for example, as 34177286641 + 65510402500 = 184871^2 + 255950^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99687689141 - 2²² = 99683494837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99687689111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346085 + ... + 564933.

It is an arithmetic number, because the mean of its divisors is an integer number (12537807075).

Almost surely, 2^99687689141 is an apocalyptic number.

It is an amenable number.

99687689141 is a deficient number, since it is larger than the sum of its proper divisors (614767459).

99687689141 is a wasteful number, since it uses less digits than its factorization.

99687689141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221655.

The product of its digits is 47029248, while the sum is 68.

The spelling of 99687689141 in words is "ninety-nine billion, six hundred eighty-seven million, six hundred eighty-nine thousand, one hundred forty-one".