82474905871 has 2 divisors, whose sum is σ = 82474905872. Its totient is φ = 82474905870.

The previous prime is 82474905853. The next prime is 82474905883. The reversal of 82474905871 is 17850947428.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82474905871 - 2⁵ = 82474905839 is a prime.

It is a super-2 number, since 2×82474905871² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82474903871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41237452935 + 41237452936.

It is an arithmetic number, because the mean of its divisors is an integer number (41237452936).

Almost surely, 2^82474905871 is an apocalyptic number.

82474905871 is a deficient number, since it is larger than the sum of its proper divisors (1).

82474905871 is an equidigital number, since it uses as much as digits as its factorization.

82474905871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 82474905871 in words is "eighty-two billion, four hundred seventy-four million, nine hundred five thousand, eight hundred seventy-one".