111885414889 has 2 divisors, whose sum is σ = 111885414890. Its totient is φ = 111885414888.

The previous prime is 111885414871. The next prime is 111885414929. The reversal of 111885414889 is 988414588111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72728920489 + 39156494400 = 269683^2 + 197880^2 .

It is a cyclic number.

It is not a de Polignac number, because 111885414889 - 2⁷ = 111885414761 is a prime.

It is not a weakly prime, because it can be changed into another prime (111885414859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55942707444 + 55942707445.

It is an arithmetic number, because the mean of its divisors is an integer number (55942707445).

Almost surely, 2^111885414889 is an apocalyptic number.

It is an amenable number.

111885414889 is a deficient number, since it is larger than the sum of its proper divisors (1).

111885414889 is an equidigital number, since it uses as much as digits as its factorization.

111885414889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2949120, while the sum is 58.

The spelling of 111885414889 in words is "one hundred eleven billion, eight hundred eighty-five million, four hundred fourteen thousand, eight hundred eighty-nine".