187940065057 has 2 divisors, whose sum is σ = 187940065058. Its totient is φ = 187940065056.

The previous prime is 187940065007. The next prime is 187940065063. The reversal of 187940065057 is 750560049781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179254011456 + 8686053601 = 423384^2 + 93199^2 .

It is a cyclic number.

It is not a de Polignac number, because 187940065057 - 2¹⁹ = 187939540769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 187940064995 and 187940065013.

It is not a weakly prime, because it can be changed into another prime (187940065007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93970032528 + 93970032529.

It is an arithmetic number, because the mean of its divisors is an integer number (93970032529).

Almost surely, 2^187940065057 is an apocalyptic number.

It is an amenable number.

187940065057 is a deficient number, since it is larger than the sum of its proper divisors (1).

187940065057 is an equidigital number, since it uses as much as digits as its factorization.

187940065057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 187940065057 in words is "one hundred eighty-seven billion, nine hundred forty million, sixty-five thousand, fifty-seven".