83895963905 has 16 divisors (see below), whose sum is σ = 108574122384. Its totient is φ = 61865529600.

The previous prime is 83895963901. The next prime is 83895963913. The reversal of 83895963905 is 50936959838.

It is a Cunningham number, because it is equal to 289648²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 5692400704 + 78203563201 = 75448^2 + 279649^2 .

It is not a de Polignac number, because 83895963905 - 2² = 83895963901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is not an unprimeable number, because it can be changed into a prime (83895963901) 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, 875054 + ... + 966183.

It is an arithmetic number, because the mean of its divisors is an integer number (6785882649).

Almost surely, 2^83895963905 is an apocalyptic number.

It is an amenable number.

83895963905 is a deficient number, since it is larger than the sum of its proper divisors (24678158479).

83895963905 is a wasteful number, since it uses less digits than its factorization.

83895963905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841956.

The product of its (nonzero) digits is 62985600, while the sum is 65.

The spelling of 83895963905 in words is "eighty-three billion, eight hundred ninety-five million, nine hundred sixty-three thousand, nine hundred five".