82915480649 has 2 divisors, whose sum is σ = 82915480650. Its totient is φ = 82915480648.

The previous prime is 82915480607. The next prime is 82915480663. The reversal of 82915480649 is 94608451928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41925429049 + 40990051600 = 204757^2 + 202460^2 .

It is a cyclic number.

It is not a de Polignac number, because 82915480649 - 2¹⁶ = 82915415113 is a prime.

It is a super-2 number, since 2×82915480649² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82915480594 and 82915480603.

It is not a weakly prime, because it can be changed into another prime (82915486649) 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 as a sum of consecutive naturals, namely, 41457740324 + 41457740325.

It is an arithmetic number, because the mean of its divisors is an integer number (41457740325).

Almost surely, 2^82915480649 is an apocalyptic number.

It is an amenable number.

82915480649 is a deficient number, since it is larger than the sum of its proper divisors (1).

82915480649 is an equidigital number, since it uses as much as digits as its factorization.

82915480649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 82915480649 in words is "eighty-two billion, nine hundred fifteen million, four hundred eighty thousand, six hundred forty-nine".