1081684506463 has 4 divisors (see below), whose sum is σ = 1180019461608. Its totient is φ = 983349551320.

The previous prime is 1081684506439. The next prime is 1081684506517. The reversal of 1081684506463 is 3646054861801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081684506463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081684506463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081684506403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49167477556 + ... + 49167477577.

It is an arithmetic number, because the mean of its divisors is an integer number (295004865402).

Almost surely, 2^{1081684506463} is an apocalyptic number.

1081684506463 is a deficient number, since it is larger than the sum of its proper divisors (98334955145).

1081684506463 is an equidigital number, since it uses as much as digits as its factorization.

1081684506463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98334955144.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 1081684506463 in words is "one trillion, eighty-one billion, six hundred eighty-four million, five hundred six thousand, four hundred sixty-three".