111551554139 has 2 divisors, whose sum is σ = 111551554140. Its totient is φ = 111551554138.

The previous prime is 111551554109. The next prime is 111551554157. The reversal of 111551554139 is 931455155111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111551554139 - 2¹⁶ = 111551488603 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 111551554096 and 111551554105.

It is not a weakly prime, because it can be changed into another prime (111551554109) 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, 55775777069 + 55775777070.

It is an arithmetic number, because the mean of its divisors is an integer number (55775777070).

Almost surely, 2^111551554139 is an apocalyptic number.

111551554139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111551554139 is an equidigital number, since it uses as much as digits as its factorization.

111551554139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 41.

The spelling of 111551554139 in words is "one hundred eleven billion, five hundred fifty-one million, five hundred fifty-four thousand, one hundred thirty-nine".