187081062481 has 2 divisors, whose sum is σ = 187081062482. Its totient is φ = 187081062480.

The previous prime is 187081062457. The next prime is 187081062491. The reversal of 187081062481 is 184260180781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159213768256 + 27867294225 = 399016^2 + 166935^2 .

It is a cyclic number.

It is not a de Polignac number, because 187081062481 - 2⁵ = 187081062449 is a prime.

It is a super-2 number, since 2×187081062481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187081062431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93540531240 + 93540531241.

It is an arithmetic number, because the mean of its divisors is an integer number (93540531241).

Almost surely, 2^187081062481 is an apocalyptic number.

It is an amenable number.

187081062481 is a deficient number, since it is larger than the sum of its proper divisors (1).

187081062481 is an equidigital number, since it uses as much as digits as its factorization.

187081062481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 46.

The spelling of 187081062481 in words is "one hundred eighty-seven billion, eighty-one million, sixty-two thousand, four hundred eighty-one".