40498381601 has 2 divisors, whose sum is σ = 40498381602. Its totient is φ = 40498381600.

The previous prime is 40498381591. The next prime is 40498381607. The reversal of 40498381601 is 10618389404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40342731025 + 155650576 = 200855^2 + 12476^2 .

It is a cyclic number.

It is not a de Polignac number, because 40498381601 - 2⁶ = 40498381537 is a prime.

It is not a weakly prime, because it can be changed into another prime (40498381607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20249190800 + 20249190801.

It is an arithmetic number, because the mean of its divisors is an integer number (20249190801).

Almost surely, 2^40498381601 is an apocalyptic number.

It is an amenable number.

40498381601 is a deficient number, since it is larger than the sum of its proper divisors (1).

40498381601 is an equidigital number, since it uses as much as digits as its factorization.

40498381601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 40498381601 in words is "forty billion, four hundred ninety-eight million, three hundred eighty-one thousand, six hundred one".