40987249601 has 2 divisors, whose sum is σ = 40987249602. Its totient is φ = 40987249600.

The previous prime is 40987249591. The next prime is 40987249607. The reversal of 40987249601 is 10694278904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40475404225 + 511845376 = 201185^2 + 22624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40987249601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40987249601.

It is not a weakly prime, because it can be changed into another prime (40987249607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20493624800 + 20493624801.

It is an arithmetic number, because the mean of its divisors is an integer number (20493624801).

Almost surely, 2^40987249601 is an apocalyptic number.

It is an amenable number.

40987249601 is a deficient number, since it is larger than the sum of its proper divisors (1).

40987249601 is an equidigital number, since it uses as much as digits as its factorization.

40987249601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 40987249601 in words is "forty billion, nine hundred eighty-seven million, two hundred forty-nine thousand, six hundred one".