112609787456981 has 2 divisors, whose sum is σ = 112609787456982. Its totient is φ = 112609787456980.

The previous prime is 112609787456977. The next prime is 112609787457031. The reversal of 112609787456981 is 189654787906211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65025934865956 + 47583852591025 = 8063866^2 + 6898105^2 .

It is a cyclic number.

It is not a de Polignac number, because 112609787456981 - 2² = 112609787456977 is a prime.

It is a super-2 number, since 2×112609787456981² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112609787456899 and 112609787456908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112609787456581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56304893728490 + 56304893728491.

It is an arithmetic number, because the mean of its divisors is an integer number (56304893728491).

Almost surely, 2^{112609787456981} is an apocalyptic number.

It is an amenable number.

112609787456981 is a deficient number, since it is larger than the sum of its proper divisors (1).

112609787456981 is an equidigital number, since it uses as much as digits as its factorization.

112609787456981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 365783040, while the sum is 74.

The spelling of 112609787456981 in words is "one hundred twelve trillion, six hundred nine billion, seven hundred eighty-seven million, four hundred fifty-six thousand, nine hundred eighty-one".