9919684099810 has 8 divisors (see below), whose sum is σ = 17855431379676. Its totient is φ = 3967873639920.

The previous prime is 9919684099781. The next prime is 9919684099823. The reversal of 9919684099810 is 189904869199.

It is a Cunningham number, because it is equal to 3149553²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 9919684099809 + 1 = 3149553^2 + 1^2 .

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

It is a super-2 number, since 2×9919684099810² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495984204981 + ... + 495984205000.

Almost surely, 2^{9919684099810} is an apocalyptic number.

9919684099810 is a deficient number, since it is larger than the sum of its proper divisors (7935747279866).

9919684099810 is a wasteful number, since it uses less digits than its factorization.

9919684099810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991968409988.

The product of its (nonzero) digits is 90699264, while the sum is 73.

The spelling of 9919684099810 in words is "nine trillion, nine hundred nineteen billion, six hundred eighty-four million, ninety-nine thousand, eight hundred ten".