111630828553 has 2 divisors, whose sum is σ = 111630828554. Its totient is φ = 111630828552.

The previous prime is 111630828541. The next prime is 111630828599. The reversal of 111630828553 is 355828036111.

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., 111630828544 + 9 = 334112^2 + 3^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111630828553 is a prime.

It is a super-2 number, since 2×111630828553² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111630828853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55815414276 + 55815414277.

It is an arithmetic number, because the mean of its divisors is an integer number (55815414277).

Almost surely, 2^111630828553 is an apocalyptic number.

It is an amenable number.

111630828553 is a deficient number, since it is larger than the sum of its proper divisors (1).

111630828553 is an equidigital number, since it uses as much as digits as its factorization.

111630828553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 111630828553 in words is "one hundred eleven billion, six hundred thirty million, eight hundred twenty-eight thousand, five hundred fifty-three".