187047133703681 has 2 divisors, whose sum is σ = 187047133703682. Its totient is φ = 187047133703680.

The previous prime is 187047133703629. The next prime is 187047133703711. The reversal of 187047133703681 is 186307331740781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110561334484225 + 76485799219456 = 10514815^2 + 8745616^2 .

It is a cyclic number.

It is not a de Polignac number, because 187047133703681 - 2¹⁸ = 187047133441537 is a prime.

It is a super-2 number, since 2×187047133703681² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 187047133703681.

It is not a weakly prime, because it can be changed into another prime (187047133763681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93523566851840 + 93523566851841.

It is an arithmetic number, because the mean of its divisors is an integer number (93523566851841).

Almost surely, 2^{187047133703681} is an apocalyptic number.

It is an amenable number.

187047133703681 is a deficient number, since it is larger than the sum of its proper divisors (1).

187047133703681 is an equidigital number, since it uses as much as digits as its factorization.

187047133703681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 187047133703681 in words is "one hundred eighty-seven trillion, forty-seven billion, one hundred thirty-three million, seven hundred three thousand, six hundred eighty-one".