1005505807087 has 2 divisors, whose sum is σ = 1005505807088. Its totient is φ = 1005505807086.

The previous prime is 1005505807069. The next prime is 1005505807099. The reversal of 1005505807087 is 7807085055001.

It is a happy number.

1005505807087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005505807087 - 2¹⁹ = 1005505282799 is a prime.

It is a super-2 number, since 2×1005505807087² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005505807387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502752903543 + 502752903544.

It is an arithmetic number, because the mean of its divisors is an integer number (502752903544).

Almost surely, 2^{1005505807087} is an apocalyptic number.

1005505807087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005505807087 is an equidigital number, since it uses as much as digits as its factorization.

1005505807087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392000, while the sum is 46.

The spelling of 1005505807087 in words is "one trillion, five billion, five hundred five million, eight hundred seven thousand, eighty-seven".