9996821151 has 16 divisors (see below), whose sum is σ = 14379449184.
Its totient is φ = 6154164224.
The previous prime is 9996821147. The next prime is 9996821161. The reversal of 9996821151 is 1511286999.
It is a cyclic number.
It is not a de Polignac number, because 9996821151 - 22 = 9996821147 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (51).
It is a junction number, because it is equal to n+sod(n) for n = 9996821094 and 9996821103.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9996821161) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846506 + ... + 1851911.
It is an arithmetic number, because the mean of its divisors is an integer number (898715574).
Almost surely, 29996821151 is an apocalyptic number.
9996821151 is the 63236-th centered pentagonal number.
9996821151 is a deficient number, since it is larger than the sum of its proper divisors (4382628033).
9996821151 is a wasteful number, since it uses less digits than its factorization.
9996821151 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3698490.
The product of its digits is 349920, while the sum is 51.
The square root of 9996821151 is about 99984.1044916641.
The cubic root of 9996821151 is about 2154.2063784192.
The spelling of 9996821151 in words is "nine billion, nine hundred ninety-six million, eight hundred twenty-one thousand, one hundred fifty-one".