82444921501 has 2 divisors, whose sum is σ = 82444921502. Its totient is φ = 82444921500.

The previous prime is 82444921441. The next prime is 82444921519. The reversal of 82444921501 is 10512944428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60710496025 + 21734425476 = 246395^2 + 147426^2 .

It is a cyclic number.

It is not a de Polignac number, because 82444921501 - 2²⁵ = 82411367069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82444921901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41222460750 + 41222460751.

It is an arithmetic number, because the mean of its divisors is an integer number (41222460751).

Almost surely, 2^82444921501 is an apocalyptic number.

It is an amenable number.

82444921501 is a deficient number, since it is larger than the sum of its proper divisors (1).

82444921501 is an equidigital number, since it uses as much as digits as its factorization.

82444921501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 82444921501 in words is "eighty-two billion, four hundred forty-four million, nine hundred twenty-one thousand, five hundred one".