82451405929 has 2 divisors, whose sum is σ = 82451405930. Its totient is φ = 82451405928.

The previous prime is 82451405843. The next prime is 82451405947. The reversal of 82451405929 is 92950415428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61844229225 + 20607176704 = 248685^2 + 143552^2 .

It is a cyclic number.

It is not a de Polignac number, because 82451405929 - 2¹³ = 82451397737 is a prime.

It is not a weakly prime, because it can be changed into another prime (82451405969) 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, 41225702964 + 41225702965.

It is an arithmetic number, because the mean of its divisors is an integer number (41225702965).

Almost surely, 2^82451405929 is an apocalyptic number.

It is an amenable number.

82451405929 is a deficient number, since it is larger than the sum of its proper divisors (1).

82451405929 is an equidigital number, since it uses as much as digits as its factorization.

82451405929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 82451405929 in words is "eighty-two billion, four hundred fifty-one million, four hundred five thousand, nine hundred twenty-nine".