82021054071 has 24 divisors (see below), whose sum is σ = 120223902960. Its totient is φ = 49702808320.

The previous prime is 82021054013. The next prime is 82021054081. The reversal of 82021054071 is 17045012028.

It is not a de Polignac number, because 82021054071 - 2³⁵ = 47661315703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82021054081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4016575 + ... + 4036943.

It is an arithmetic number, because the mean of its divisors is an integer number (5009329290).

Almost surely, 2^82021054071 is an apocalyptic number.

82021054071 is a deficient number, since it is larger than the sum of its proper divisors (38202848889).

82021054071 is a wasteful number, since it uses less digits than its factorization.

82021054071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31487 (or 31476 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

Adding to 82021054071 its reverse (17045012028), we get a palindrome (99066066099).

The spelling of 82021054071 in words is "eighty-two billion, twenty-one million, fifty-four thousand, seventy-one".