881360460865 has 4 divisors (see below), whose sum is σ = 1057632553044. Its totient is φ = 705088368688.

The previous prime is 881360460823. The next prime is 881360460913. The reversal of 881360460865 is 568064063188.

It is a Cunningham number, because it is equal to 938808²+1.

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 317288864656 + 564071596209 = 563284^2 + 751047^2 .

It is a cyclic number.

It is not a de Polignac number, because 881360460865 - 2¹⁷ = 881360329793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 88136046082 + ... + 88136046091.

It is an arithmetic number, because the mean of its divisors is an integer number (264408138261).

Almost surely, 2^881360460865 is an apocalyptic number.

It is an amenable number.

881360460865 is a deficient number, since it is larger than the sum of its proper divisors (176272092179).

881360460865 is a wasteful number, since it uses less digits than its factorization.

881360460865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176272092178.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 881360460865 in words is "eight hundred eighty-one billion, three hundred sixty million, four hundred sixty thousand, eight hundred sixty-five".