40109505773 has 2 divisors, whose sum is σ = 40109505774. Its totient is φ = 40109505772.

The previous prime is 40109505769. The next prime is 40109505829. The reversal of 40109505773 is 37750590104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40063224964 + 46280809 = 200158^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 40109505773 - 2² = 40109505769 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40109505773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40109505703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20054752886 + 20054752887.

It is an arithmetic number, because the mean of its divisors is an integer number (20054752887).

Almost surely, 2^40109505773 is an apocalyptic number.

It is an amenable number.

40109505773 is a deficient number, since it is larger than the sum of its proper divisors (1).

40109505773 is an equidigital number, since it uses as much as digits as its factorization.

40109505773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The spelling of 40109505773 in words is "forty billion, one hundred nine million, five hundred five thousand, seven hundred seventy-three".