82477983571 has 16 divisors (see below), whose sum is σ = 85796352000. Its totient is φ = 79191671328.

The previous prime is 82477983559. The next prime is 82477983593. The reversal of 82477983571 is 17538977428.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82477983571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82477981571) 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, 19982910 + ... + 19987036.

It is an arithmetic number, because the mean of its divisors is an integer number (5362272000).

Almost surely, 2^82477983571 is an apocalyptic number.

82477983571 is a deficient number, since it is larger than the sum of its proper divisors (3318368429).

82477983571 is a wasteful number, since it uses less digits than its factorization.

82477983571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818.

The product of its digits is 23708160, while the sum is 61.

The spelling of 82477983571 in words is "eighty-two billion, four hundred seventy-seven million, nine hundred eighty-three thousand, five hundred seventy-one".