9965814071 has 6 divisors (see below), whose sum is σ = 10079055672. Its totient is φ = 9853830800.

The previous prime is 9965814041. The next prime is 9965814101. The reversal of 9965814071 is 1704185699.

It is an interprime number because it is at equal distance from previous prime (9965814041) and next prime (9965814101).

It is not a de Polignac number, because 9965814071 - 2⁶ = 9965814007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9965814041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 621155 + ... + 636996.

It is an arithmetic number, because the mean of its divisors is an integer number (1679842612).

Almost surely, 2^9965814071 is an apocalyptic number.

9965814071 is a deficient number, since it is larger than the sum of its proper divisors (113241601).

9965814071 is an equidigital number, since it uses as much as digits as its factorization.

9965814071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258329 (or 1258240 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 9965814071 is about 99828.9240200454. The cubic root of 9965814071 is about 2151.9768420617.

The spelling of 9965814071 in words is "nine billion, nine hundred sixty-five million, eight hundred fourteen thousand, seventy-one".