9953371663 has 4 divisors (see below), whose sum is σ = 10055983840. Its totient is φ = 9850759488.

The previous prime is 9953371651. The next prime is 9953371691. The reversal of 9953371663 is 3661733599.

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

It is a cyclic number.

It is not a de Polignac number, because 9953371663 - 2⁹ = 9953371151 is a prime.

It is a super-2 number, since 2×9953371663² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9953371663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9953371063) 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, 51305943 + ... + 51306136.

It is an arithmetic number, because the mean of its divisors is an integer number (2513995960).

Almost surely, 2^9953371663 is an apocalyptic number.

9953371663 is a deficient number, since it is larger than the sum of its proper divisors (102612177).

9953371663 is a wasteful number, since it uses less digits than its factorization.

9953371663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102612176.

The product of its digits is 2755620, while the sum is 52.

The square root of 9953371663 is about 99766.5859042996. The cubic root of 9953371663 is about 2151.0808816419.

The spelling of 9953371663 in words is "nine billion, nine hundred fifty-three million, three hundred seventy-one thousand, six hundred sixty-three".