9905351655 has 16 divisors (see below), whose sum is σ = 15850173024. Its totient is φ = 5282317440.

The previous prime is 9905351641. The next prime is 9905351693. The reversal of 9905351655 is 5561535099.

It is not a de Polignac number, because 9905351655 - 2¹⁸ = 9905089511 is a prime.

It is a super-2 number, since 2×9905351655² (a number of 21 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, 152157 + ... + 207273.

It is an arithmetic number, because the mean of its divisors is an integer number (990635814).

Almost surely, 2^9905351655 is an apocalyptic number.

9905351655 is a deficient number, since it is larger than the sum of its proper divisors (5944821369).

9905351655 is a wasteful number, since it uses less digits than its factorization.

9905351655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67106.

The product of its (nonzero) digits is 911250, while the sum is 48.

The square root of 9905351655 is about 99525.6331554841. The cubic root of 9905351655 is about 2147.6160094139.

The spelling of 9905351655 in words is "nine billion, nine hundred five million, three hundred fifty-one thousand, six hundred fifty-five".