157770672161 has 2 divisors, whose sum is σ = 157770672162. Its totient is φ = 157770672160.

The previous prime is 157770672149. The next prime is 157770672167. The reversal of 157770672161 is 161276077751.

157770672161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157743214561 + 27457600 = 397169^2 + 5240^2 .

It is a cyclic number.

It is not a de Polignac number, because 157770672161 - 2³⁴ = 140590802977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (157770672167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78885336080 + 78885336081.

It is an arithmetic number, because the mean of its divisors is an integer number (78885336081).

Almost surely, 2^157770672161 is an apocalyptic number.

It is an amenable number.

157770672161 is a deficient number, since it is larger than the sum of its proper divisors (1).

157770672161 is an equidigital number, since it uses as much as digits as its factorization.

157770672161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864360, while the sum is 50.

The spelling of 157770672161 in words is "one hundred fifty-seven billion, seven hundred seventy million, six hundred seventy-two thousand, one hundred sixty-one".