1004401099777 has 2 divisors, whose sum is σ = 1004401099778. Its totient is φ = 1004401099776.

The previous prime is 1004401099607. The next prime is 1004401099847. The reversal of 1004401099777 is 7779901044001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952652129521 + 51748970256 = 976039^2 + 227484^2 .

It is an emirp because it is prime and its reverse (7779901044001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1004401099777 - 2¹⁵ = 1004401067009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004401099777.

It is not a weakly prime, because it can be changed into another prime (1004401099577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502200549888 + 502200549889.

It is an arithmetic number, because the mean of its divisors is an integer number (502200549889).

Almost surely, 2^{1004401099777} is an apocalyptic number.

It is an amenable number.

1004401099777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004401099777 is an equidigital number, since it uses as much as digits as its factorization.

1004401099777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 49.

The spelling of 1004401099777 in words is "one trillion, four billion, four hundred one million, ninety-nine thousand, seven hundred seventy-seven".