40122566461 has 2 divisors, whose sum is σ = 40122566462. Its totient is φ = 40122566460.

The previous prime is 40122566431. The next prime is 40122566489. The reversal of 40122566461 is 16466522104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39364940836 + 757625625 = 198406^2 + 27525^2 .

It is a cyclic number.

It is not a de Polignac number, because 40122566461 - 2¹³ = 40122558269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40122566461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40122566431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061283230 + 20061283231.

It is an arithmetic number, because the mean of its divisors is an integer number (20061283231).

Almost surely, 2^40122566461 is an apocalyptic number.

It is an amenable number.

40122566461 is a deficient number, since it is larger than the sum of its proper divisors (1).

40122566461 is an equidigital number, since it uses as much as digits as its factorization.

40122566461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 40122566461 in words is "forty billion, one hundred twenty-two million, five hundred sixty-six thousand, four hundred sixty-one".