157171202894777 has 2 divisors, whose sum is σ = 157171202894778. Its totient is φ = 157171202894776.

The previous prime is 157171202894731. The next prime is 157171202894779. The reversal of 157171202894777 is 777498202171751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131105797620736 + 26065405274041 = 11450144^2 + 5105429^2 .

It is a cyclic number.

It is not a de Polignac number, because 157171202894777 - 2¹⁰ = 157171202893753 is a prime.

Together with 157171202894779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157171202894779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78585601447388 + 78585601447389.

It is an arithmetic number, because the mean of its divisors is an integer number (78585601447389).

Almost surely, 2^{157171202894777} is an apocalyptic number.

It is an amenable number.

157171202894777 is a deficient number, since it is larger than the sum of its proper divisors (1).

157171202894777 is an equidigital number, since it uses as much as digits as its factorization.

157171202894777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96808320, while the sum is 68.

The spelling of 157171202894777 in words is "one hundred fifty-seven trillion, one hundred seventy-one billion, two hundred two million, eight hundred ninety-four thousand, seven hundred seventy-seven".