111779556151 has 2 divisors, whose sum is σ = 111779556152. Its totient is φ = 111779556150.

The previous prime is 111779556149. The next prime is 111779556211. The reversal of 111779556151 is 151655977111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111779556151 - 2¹ = 111779556149 is a prime.

Together with 111779556149, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 111779556095 and 111779556104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111779556101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55889778075 + 55889778076.

It is an arithmetic number, because the mean of its divisors is an integer number (55889778076).

Almost surely, 2^111779556151 is an apocalyptic number.

111779556151 is a deficient number, since it is larger than the sum of its proper divisors (1).

111779556151 is an equidigital number, since it uses as much as digits as its factorization.

111779556151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 330750, while the sum is 49.

The spelling of 111779556151 in words is "one hundred eleven billion, seven hundred seventy-nine million, five hundred fifty-six thousand, one hundred fifty-one".