881018787461 has 2 divisors, whose sum is σ = 881018787462. Its totient is φ = 881018787460.

The previous prime is 881018787443. The next prime is 881018787463. The reversal of 881018787461 is 164787810188.

It is a happy number.

881018787461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465780315361 + 415238472100 = 682481^2 + 644390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881018787461 is a prime.

Together with 881018787463, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 881018787461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881018787463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440509393730 + 440509393731.

It is an arithmetic number, because the mean of its divisors is an integer number (440509393731).

Almost surely, 2^881018787461 is an apocalyptic number.

It is an amenable number.

881018787461 is a deficient number, since it is larger than the sum of its proper divisors (1).

881018787461 is an equidigital number, since it uses as much as digits as its factorization.

881018787461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4816896, while the sum is 59.

The spelling of 881018787461 in words is "eight hundred eighty-one billion, eighteen million, seven hundred eighty-seven thousand, four hundred sixty-one".