82634790375421 has 2 divisors, whose sum is σ = 82634790375422. Its totient is φ = 82634790375420.

The previous prime is 82634790375383. The next prime is 82634790375461. The reversal of 82634790375421 is 12457309743628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50900890484196 + 31733899891225 = 7134486^2 + 5633285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82634790375421 is a prime.

It is a super-2 number, since 2×82634790375421² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82634790375421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82634790375461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41317395187710 + 41317395187711.

It is an arithmetic number, because the mean of its divisors is an integer number (41317395187711).

It is a 1-persistent number, because it is pandigital, but 2⋅82634790375421 = 165269580750842 is not.

Almost surely, 2^{82634790375421} is an apocalyptic number.

It is an amenable number.

82634790375421 is a deficient number, since it is larger than the sum of its proper divisors (1).

82634790375421 is an equidigital number, since it uses as much as digits as its factorization.

82634790375421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 61.

The spelling of 82634790375421 in words is "eighty-two trillion, six hundred thirty-four billion, seven hundred ninety million, three hundred seventy-five thousand, four hundred twenty-one".