83821071995 has 16 divisors (see below), whose sum is σ = 100707840000. Its totient is φ = 66975219168.

The previous prime is 83821071989. The next prime is 83821072001. The reversal of 83821071995 is 59917012838.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (83821071989) and next prime (83821072001).

It is a cyclic number.

It is not a de Polignac number, because 83821071995 - 2⁴ = 83821071979 is a prime.

It is a super-2 number, since 2×83821071995² (a number of 23 digits) contains 22 as substring.

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, 22536746 + ... + 22540464.

It is an arithmetic number, because the mean of its divisors is an integer number (6294240000).

Almost surely, 2^83821071995 is an apocalyptic number.

83821071995 is a deficient number, since it is larger than the sum of its proper divisors (16886768005).

83821071995 is a wasteful number, since it uses less digits than its factorization.

83821071995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 83821071995 in words is "eighty-three billion, eight hundred twenty-one million, seventy-one thousand, nine hundred ninety-five".