4080812521 has 2 divisors, whose sum is σ = 4080812522. Its totient is φ = 4080812520.

The previous prime is 4080812497. The next prime is 4080812537. The reversal of 4080812521 is 1252180804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3075922521 + 1004890000 = 55461^2 + 31700^2 .

It is a cyclic number.

It is not a de Polignac number, because 4080812521 - 2¹⁵ = 4080779753 is a prime.

It is not a weakly prime, because it can be changed into another prime (4080812921) 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, 2040406260 + 2040406261.

It is an arithmetic number, because the mean of its divisors is an integer number (2040406261).

Almost surely, 2^4080812521 is an apocalyptic number.

It is an amenable number.

4080812521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4080812521 is an equidigital number, since it uses as much as digits as its factorization.

4080812521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 4080812521 is about 63881.2376289001. The cubic root of 4080812521 is about 1598.0200144684.

The spelling of 4080812521 in words is "four billion, eighty million, eight hundred twelve thousand, five hundred twenty-one".