111998951413 has 2 divisors, whose sum is σ = 111998951414. Its totient is φ = 111998951412.

The previous prime is 111998951401. The next prime is 111998951443. The reversal of 111998951413 is 314159899111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70292326129 + 41706625284 = 265127^2 + 204222^2 .

It is a cyclic number.

It is not a de Polignac number, because 111998951413 - 2¹⁷ = 111998820341 is a prime.

It is a super-2 number, since 2×111998951413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111998951443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55999475706 + 55999475707.

It is an arithmetic number, because the mean of its divisors is an integer number (55999475707).

Almost surely, 2^111998951413 is an apocalyptic number.

It is an amenable number.

111998951413 is a deficient number, since it is larger than the sum of its proper divisors (1).

111998951413 is an equidigital number, since it uses as much as digits as its factorization.

111998951413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 52.

The spelling of 111998951413 in words is "one hundred eleven billion, nine hundred ninety-eight million, nine hundred fifty-one thousand, four hundred thirteen".