157887054161 has 2 divisors, whose sum is σ = 157887054162. Its totient is φ = 157887054160.

The previous prime is 157887054001. The next prime is 157887054173. The reversal of 157887054161 is 161450788751.

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., 131827086400 + 26059967761 = 363080^2 + 161431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157887054161 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 (157887054181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78943527080 + 78943527081.

It is an arithmetic number, because the mean of its divisors is an integer number (78943527081).

Almost surely, 2^157887054161 is an apocalyptic number.

It is an amenable number.

157887054161 is a deficient number, since it is larger than the sum of its proper divisors (1).

157887054161 is an equidigital number, since it uses as much as digits as its factorization.

157887054161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1881600, while the sum is 53.

The spelling of 157887054161 in words is "one hundred fifty-seven billion, eight hundred eighty-seven million, fifty-four thousand, one hundred sixty-one".