110643894457 has 2 divisors, whose sum is σ = 110643894458. Its totient is φ = 110643894456.

The previous prime is 110643894437. The next prime is 110643894539. The reversal of 110643894457 is 754498346011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92135924521 + 18507969936 = 303539^2 + 136044^2 .

It is a cyclic number.

It is not a de Polignac number, because 110643894457 - 2¹¹ = 110643892409 is a prime.

It is a super-2 number, since 2×110643894457² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (110643894407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55321947228 + 55321947229.

It is an arithmetic number, because the mean of its divisors is an integer number (55321947229).

Almost surely, 2^110643894457 is an apocalyptic number.

It is an amenable number.

110643894457 is a deficient number, since it is larger than the sum of its proper divisors (1).

110643894457 is an equidigital number, since it uses as much as digits as its factorization.

110643894457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 110643894457 in words is "one hundred ten billion, six hundred forty-three million, eight hundred ninety-four thousand, four hundred fifty-seven".