111207361649 has 2 divisors, whose sum is σ = 111207361650. Its totient is φ = 111207361648.

The previous prime is 111207361621. The next prime is 111207361691. The reversal of 111207361649 is 946163702111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88366480225 + 22840881424 = 297265^2 + 151132^2 .

It is an emirp because it is prime and its reverse (946163702111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111207361649 - 2⁸ = 111207361393 is a prime.

It is not a weakly prime, because it can be changed into another prime (111207361609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55603680824 + 55603680825.

It is an arithmetic number, because the mean of its divisors is an integer number (55603680825).

Almost surely, 2^111207361649 is an apocalyptic number.

It is an amenable number.

111207361649 is a deficient number, since it is larger than the sum of its proper divisors (1).

111207361649 is an equidigital number, since it uses as much as digits as its factorization.

111207361649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 111207361649 in words is "one hundred eleven billion, two hundred seven million, three hundred sixty-one thousand, six hundred forty-nine".