111440662457 has 2 divisors, whose sum is σ = 111440662458. Its totient is φ = 111440662456.

The previous prime is 111440662391. The next prime is 111440662517. The reversal of 111440662457 is 754266044111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56748291961 + 54692370496 = 238219^2 + 233864^2 .

It is an emirp because it is prime and its reverse (754266044111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111440662457 - 2¹² = 111440658361 is a prime.

It is not a weakly prime, because it can be changed into another prime (111440668457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55720331228 + 55720331229.

It is an arithmetic number, because the mean of its divisors is an integer number (55720331229).

Almost surely, 2^111440662457 is an apocalyptic number.

It is an amenable number.

111440662457 is a deficient number, since it is larger than the sum of its proper divisors (1).

111440662457 is an equidigital number, since it uses as much as digits as its factorization.

111440662457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 111440662457 in words is "one hundred eleven billion, four hundred forty million, six hundred sixty-two thousand, four hundred fifty-seven".