40107888641 has 2 divisors, whose sum is σ = 40107888642. Its totient is φ = 40107888640.

The previous prime is 40107888617. The next prime is 40107888661. The reversal of 40107888641 is 14688870104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32374445041 + 7733443600 = 179929^2 + 87940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40107888641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40107888661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053944320 + 20053944321.

It is an arithmetic number, because the mean of its divisors is an integer number (20053944321).

Almost surely, 2^40107888641 is an apocalyptic number.

It is an amenable number.

40107888641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40107888641 is an equidigital number, since it uses as much as digits as its factorization.

40107888641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 40107888641 in words is "forty billion, one hundred seven million, eight hundred eighty-eight thousand, six hundred forty-one".