6147560491781 has 2 divisors, whose sum is σ = 6147560491782. Its totient is φ = 6147560491780.

The previous prime is 6147560491777. The next prime is 6147560491823. The reversal of 6147560491781 is 1871940657416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5267277453025 + 880283038756 = 2295055^2 + 938234^2 .

It is a cyclic number.

It is not a de Polignac number, because 6147560491781 - 2² = 6147560491777 is a prime.

It is a super-2 number, since 2×6147560491781² (a number of 26 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 6147560491781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6147560491771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3073780245890 + 3073780245891.

It is an arithmetic number, because the mean of its divisors is an integer number (3073780245891).

Almost surely, 2^{6147560491781} is an apocalyptic number.

It is an amenable number.

6147560491781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6147560491781 is an equidigital number, since it uses as much as digits as its factorization.

6147560491781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 6147560491781 in words is "six trillion, one hundred forty-seven billion, five hundred sixty million, four hundred ninety-one thousand, seven hundred eighty-one".