7180012157 has 2 divisors, whose sum is σ = 7180012158. Its totient is φ = 7180012156.

The previous prime is 7180012123. The next prime is 7180012159. The reversal of 7180012157 is 7512100817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6846073081 + 333939076 = 82741^2 + 18274^2 .

It is a cyclic number.

It is not a de Polignac number, because 7180012157 - 2⁶ = 7180012093 is a prime.

Together with 7180012159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7180012159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590006078 + 3590006079.

It is an arithmetic number, because the mean of its divisors is an integer number (3590006079).

Almost surely, 2^7180012157 is an apocalyptic number.

It is an amenable number.

7180012157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7180012157 is an equidigital number, since it uses as much as digits as its factorization.

7180012157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 7180012157 is about 84734.9523927405. The cubic root of 7180012157 is about 1929.1902566618.

The spelling of 7180012157 in words is "seven billion, one hundred eighty million, twelve thousand, one hundred fifty-seven".