111262129457 has 2 divisors, whose sum is σ = 111262129458. Its totient is φ = 111262129456.

The previous prime is 111262129453. The next prime is 111262129513. The reversal of 111262129457 is 754921262111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98074822561 + 13187306896 = 313169^2 + 114836^2 .

It is a cyclic number.

It is not a de Polignac number, because 111262129457 - 2² = 111262129453 is a prime.

It is a super-2 number, since 2×111262129457² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111262129453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55631064728 + 55631064729.

It is an arithmetic number, because the mean of its divisors is an integer number (55631064729).

Almost surely, 2^111262129457 is an apocalyptic number.

It is an amenable number.

111262129457 is a deficient number, since it is larger than the sum of its proper divisors (1).

111262129457 is an equidigital number, since it uses as much as digits as its factorization.

111262129457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The spelling of 111262129457 in words is "one hundred eleven billion, two hundred sixty-two million, one hundred twenty-nine thousand, four hundred fifty-seven".