1205802105087 has 4 divisors (see below), whose sum is σ = 1607736140120. Its totient is φ = 803868070056.

The previous prime is 1205802105061. The next prime is 1205802105097. The reversal of 1205802105087 is 7805012085021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1205802105087 - 2¹⁴ = 1205802088703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205802105097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200967017512 + ... + 200967017517.

It is an arithmetic number, because the mean of its divisors is an integer number (401934035030).

Almost surely, 2^{1205802105087} is an apocalyptic number.

1205802105087 is a deficient number, since it is larger than the sum of its proper divisors (401934035033).

1205802105087 is an equidigital number, since it uses as much as digits as its factorization.

1205802105087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401934035032.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 1205802105087 in words is "one trillion, two hundred five billion, eight hundred two million, one hundred five thousand, eighty-seven".