82961612847 has 24 divisors (see below), whose sum is σ = 120244500480. Its totient is φ = 55118238480.

The previous prime is 82961612843. The next prime is 82961612857. The reversal of 82961612847 is 74821616928.

It is a happy number.

82961612847 is a `hidden beast` number, since 8 + 2 + 9 + 616 + 12 + 8 + 4 + 7 = 666.

It is not a de Polignac number, because 82961612847 - 2² = 82961612843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82961612793 and 82961612802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82961612843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5141322 + ... + 5157432.

It is an arithmetic number, because the mean of its divisors is an integer number (5010187520).

Almost surely, 2^82961612847 is an apocalyptic number.

82961612847 is a deficient number, since it is larger than the sum of its proper divisors (37282887633).

82961612847 is a wasteful number, since it uses less digits than its factorization.

82961612847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18043 (or 18040 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 82961612847 in words is "eighty-two billion, nine hundred sixty-one million, six hundred twelve thousand, eight hundred forty-seven".