111660663506153 has 2 divisors, whose sum is σ = 111660663506154. Its totient is φ = 111660663506152.

The previous prime is 111660663505981. The next prime is 111660663506167. The reversal of 111660663506153 is 351605366066111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93762754835689 + 17897908670464 = 9683117^2 + 4230592^2 .

It is a cyclic number.

It is not a de Polignac number, because 111660663506153 - 2¹² = 111660663502057 is a prime.

It is not a weakly prime, because it can be changed into another prime (111660663506173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55830331753076 + 55830331753077.

It is an arithmetic number, because the mean of its divisors is an integer number (55830331753077).

Almost surely, 2^{111660663506153} is an apocalyptic number.

It is an amenable number.

111660663506153 is a deficient number, since it is larger than the sum of its proper divisors (1).

111660663506153 is an equidigital number, since it uses as much as digits as its factorization.

111660663506153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 111660663506153 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred sixty-three million, five hundred six thousand, one hundred fifty-three".