187350145261 has 2 divisors, whose sum is σ = 187350145262. Its totient is φ = 187350145260.

The previous prime is 187350145223. The next prime is 187350145303. The reversal of 187350145261 is 162541053781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97332144361 + 90018000900 = 311981^2 + 300030^2 .

It is a cyclic number.

It is not a de Polignac number, because 187350145261 - 2²³ = 187341756653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187350145211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93675072630 + 93675072631.

It is an arithmetic number, because the mean of its divisors is an integer number (93675072631).

Almost surely, 2^187350145261 is an apocalyptic number.

It is an amenable number.

187350145261 is a deficient number, since it is larger than the sum of its proper divisors (1).

187350145261 is an equidigital number, since it uses as much as digits as its factorization.

187350145261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 187350145261 in words is "one hundred eighty-seven billion, three hundred fifty million, one hundred forty-five thousand, two hundred sixty-one".