9901986929411 has 4 divisors (see below), whose sum is σ = 9902007891024. Its totient is φ = 9901965967800.

The previous prime is 9901986929399. The next prime is 9901986929467. The reversal of 9901986929411 is 1149296891099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9901986929411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901986920411) 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, 9755495 + ... + 10722576.

It is an arithmetic number, because the mean of its divisors is an integer number (2475501972756).

Almost surely, 2^{9901986929411} is an apocalyptic number.

9901986929411 is a deficient number, since it is larger than the sum of its proper divisors (20961613).

9901986929411 is a wasteful number, since it uses less digits than its factorization.

9901986929411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20961612.

The product of its (nonzero) digits is 22674816, while the sum is 68.

The spelling of 9901986929411 in words is "nine trillion, nine hundred one billion, nine hundred eighty-six million, nine hundred twenty-nine thousand, four hundred eleven".