47982186761 has 2 divisors, whose sum is σ = 47982186762. Its totient is φ = 47982186760.

The previous prime is 47982186739. The next prime is 47982186773. The reversal of 47982186761 is 16768128974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26771177161 + 21211009600 = 163619^2 + 145640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47982186761 is a prime.

It is a super-2 number, since 2×47982186761² (a number of 22 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 47982186761.

It is not a weakly prime, because it can be changed into another prime (47982186781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23991093380 + 23991093381.

It is an arithmetic number, because the mean of its divisors is an integer number (23991093381).

Almost surely, 2^47982186761 is an apocalyptic number.

It is an amenable number.

47982186761 is a deficient number, since it is larger than the sum of its proper divisors (1).

47982186761 is an equidigital number, since it uses as much as digits as its factorization.

47982186761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 59.

The spelling of 47982186761 in words is "forty-seven billion, nine hundred eighty-two million, one hundred eighty-six thousand, seven hundred sixty-one".