40082800561 has 2 divisors, whose sum is σ = 40082800562. Its totient is φ = 40082800560.

The previous prime is 40082800553. The next prime is 40082800567. The reversal of 40082800561 is 16500828004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34439936400 + 5642864161 = 185580^2 + 75119^2 .

It is a cyclic number.

It is not a de Polignac number, because 40082800561 - 2³ = 40082800553 is a prime.

It is not a weakly prime, because it can be changed into another prime (40082800567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20041400280 + 20041400281.

It is an arithmetic number, because the mean of its divisors is an integer number (20041400281).

Almost surely, 2^40082800561 is an apocalyptic number.

It is an amenable number.

40082800561 is a deficient number, since it is larger than the sum of its proper divisors (1).

40082800561 is an equidigital number, since it uses as much as digits as its factorization.

40082800561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 40082800561 in words is "forty billion, eighty-two million, eight hundred thousand, five hundred sixty-one".