1081863316385 has 8 divisors (see below), whose sum is σ = 1354681022400. Its totient is φ = 827860624624.

The previous prime is 1081863316381. The next prime is 1081863316397. The reversal of 1081863316385 is 5836133681801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081863316385 - 2² = 1081863316381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081863316381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703753435 + ... + 4703753664.

It is an arithmetic number, because the mean of its divisors is an integer number (169335127800).

Almost surely, 2^{1081863316385} is an apocalyptic number.

It is an amenable number.

1081863316385 is a deficient number, since it is larger than the sum of its proper divisors (272817706015).

1081863316385 is an equidigital number, since it uses as much as digits as its factorization.

1081863316385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9407507127.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 1081863316385 in words is "one trillion, eighty-one billion, eight hundred sixty-three million, three hundred sixteen thousand, three hundred eighty-five".