9929872308855 has 16 divisors (see below), whose sum is σ = 16822371911904. Its totient is φ = 4984406492160.

The previous prime is 9929872308841. The next prime is 9929872308943. The reversal of 9929872308855 is 5588032789299.

It is not a de Polignac number, because 9929872308855 - 2³⁶ = 9861152832119 is a prime.

It is a super-2 number, since 2×9929872308855² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19470337606 + ... + 19470338115.

It is an arithmetic number, because the mean of its divisors is an integer number (1051398244494).

Almost surely, 2^{9929872308855} is an apocalyptic number.

9929872308855 is a deficient number, since it is larger than the sum of its proper divisors (6892499603049).

9929872308855 is a wasteful number, since it uses less digits than its factorization.

9929872308855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38940675746.

The product of its (nonzero) digits is 783820800, while the sum is 75.

The spelling of 9929872308855 in words is "nine trillion, nine hundred twenty-nine billion, eight hundred seventy-two million, three hundred eight thousand, eight hundred fifty-five".