40485702661 has 2 divisors, whose sum is σ = 40485702662. Its totient is φ = 40485702660.

The previous prime is 40485702637. The next prime is 40485702701. The reversal of 40485702661 is 16620758404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38988477025 + 1497225636 = 197455^2 + 38694^2 .

It is a cyclic number.

It is not a de Polignac number, because 40485702661 - 2³¹ = 38338219013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40485702611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20242851330 + 20242851331.

It is an arithmetic number, because the mean of its divisors is an integer number (20242851331).

Almost surely, 2^40485702661 is an apocalyptic number.

It is an amenable number.

40485702661 is a deficient number, since it is larger than the sum of its proper divisors (1).

40485702661 is an equidigital number, since it uses as much as digits as its factorization.

40485702661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 40485702661 in words is "forty billion, four hundred eighty-five million, seven hundred two thousand, six hundred sixty-one".