68100157 has 2 divisors, whose sum is σ = 68100158. Its totient is φ = 68100156.

The previous prime is 68100143. The next prime is 68100169. The reversal of 68100157 is 75100186.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67798756 + 301401 = 8234^2 + 549^2 .

It is a cyclic number.

It is not a de Polignac number, because 68100157 - 2¹⁹ = 67575869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34050078 + 34050079.

It is an arithmetic number, because the mean of its divisors is an integer number (34050079).

Almost surely, 2^68100157 is an apocalyptic number.

It is an amenable number.

68100157 is a deficient number, since it is larger than the sum of its proper divisors (1).

68100157 is an equidigital number, since it uses as much as digits as its factorization.

68100157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 68100157 is about 8252.2819268370. The cubic root of 68100157 is about 408.3658071448.

The spelling of 68100157 in words is "sixty-eight million, one hundred thousand, one hundred fifty-seven".