157766888249 has 2 divisors, whose sum is σ = 157766888250. Its totient is φ = 157766888248.

The previous prime is 157766888239. The next prime is 157766888287. The reversal of 157766888249 is 942888667751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134474023849 + 23292864400 = 366707^2 + 152620^2 .

It is a cyclic number.

It is not a de Polignac number, because 157766888249 - 2⁴ = 157766888233 is a prime.

It is not a weakly prime, because it can be changed into another prime (157766888219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78883444124 + 78883444125.

It is an arithmetic number, because the mean of its divisors is an integer number (78883444125).

Almost surely, 2^157766888249 is an apocalyptic number.

It is an amenable number.

157766888249 is a deficient number, since it is larger than the sum of its proper divisors (1).

157766888249 is an equidigital number, since it uses as much as digits as its factorization.

157766888249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 325140480, while the sum is 71.

The spelling of 157766888249 in words is "one hundred fifty-seven billion, seven hundred sixty-six million, eight hundred eighty-eight thousand, two hundred forty-nine".