981416602865 has 4 divisors (see below), whose sum is σ = 1177699923444. Its totient is φ = 785133282288.

The previous prime is 981416602853. The next prime is 981416602871. The reversal of 981416602865 is 568206614189.

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 697104765184 + 284311837681 = 834928^2 + 533209^2 .

It is a cyclic number.

It is not a de Polignac number, because 981416602865 - 2¹⁴ = 981416586481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 981416602865.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98141660282 + ... + 98141660291.

It is an arithmetic number, because the mean of its divisors is an integer number (294424980861).

Almost surely, 2^981416602865 is an apocalyptic number.

It is an amenable number.

981416602865 is a deficient number, since it is larger than the sum of its proper divisors (196283320579).

981416602865 is a wasteful number, since it uses less digits than its factorization.

981416602865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196283320578.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 981416602865 in words is "nine hundred eighty-one billion, four hundred sixteen million, six hundred two thousand, eight hundred sixty-five".