409979751659741 has 2 divisors, whose sum is σ = 409979751659742. Its totient is φ = 409979751659740.

The previous prime is 409979751659729. The next prime is 409979751659843. The reversal of 409979751659741 is 147956157979904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319068370375225 + 90911381284516 = 17862485^2 + 9534746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409979751659741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409979751659741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409979751659141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204989875829870 + 204989875829871.

It is an arithmetic number, because the mean of its divisors is an integer number (204989875829871).

Almost surely, 2^{409979751659741} is an apocalyptic number.

It is an amenable number.

409979751659741 is a deficient number, since it is larger than the sum of its proper divisors (1).

409979751659741 is an equidigital number, since it uses as much as digits as its factorization.

409979751659741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5401015200, while the sum is 83.

The spelling of 409979751659741 in words is "four hundred nine trillion, nine hundred seventy-nine billion, seven hundred fifty-one million, six hundred fifty-nine thousand, seven hundred forty-one".