40122566489 has 2 divisors, whose sum is σ = 40122566490. Its totient is φ = 40122566488.

The previous prime is 40122566461. The next prime is 40122566599. The reversal of 40122566489 is 98466522104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26367264400 + 13755302089 = 162380^2 + 117283^2 .

It is a cyclic number.

It is not a de Polignac number, because 40122566489 - 2¹⁶ = 40122500953 is a prime.

It is not a weakly prime, because it can be changed into another prime (40125566489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061283244 + 20061283245.

It is an arithmetic number, because the mean of its divisors is an integer number (20061283245).

Almost surely, 2^40122566489 is an apocalyptic number.

It is an amenable number.

40122566489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40122566489 is an equidigital number, since it uses as much as digits as its factorization.

40122566489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 40122566489 in words is "forty billion, one hundred twenty-two million, five hundred sixty-six thousand, four hundred eighty-nine".