1087896173405 has 4 divisors (see below), whose sum is σ = 1305475408092. Its totient is φ = 870316938720.

The previous prime is 1087896173389. The next prime is 1087896173407. The reversal of 1087896173405 is 5043716987801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 442722559876 + 645173613529 = 665374^2 + 803227^2 .

It is not a de Polignac number, because 1087896173405 - 2⁴ = 1087896173389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087896173407) 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, 108789617336 + ... + 108789617345.

It is an arithmetic number, because the mean of its divisors is an integer number (326368852023).

Almost surely, 2^{1087896173405} is an apocalyptic number.

It is an amenable number.

1087896173405 is a deficient number, since it is larger than the sum of its proper divisors (217579234687).

1087896173405 is an equidigital number, since it uses as much as digits as its factorization.

1087896173405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217579234686.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 1087896173405 in words is "one trillion, eighty-seven billion, eight hundred ninety-six million, one hundred seventy-three thousand, four hundred five".