87841644071 has 2 divisors, whose sum is σ = 87841644072. Its totient is φ = 87841644070.

The previous prime is 87841644029. The next prime is 87841644101. The reversal of 87841644071 is 17044614878.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87841644071 is a prime.

It is a super-3 number, since 3×87841644071³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87841644271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43920822035 + 43920822036.

It is an arithmetic number, because the mean of its divisors is an integer number (43920822036).

Almost surely, 2^87841644071 is an apocalyptic number.

87841644071 is a deficient number, since it is larger than the sum of its proper divisors (1).

87841644071 is an equidigital number, since it uses as much as digits as its factorization.

87841644071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 87841644071 in words is "eighty-seven billion, eight hundred forty-one million, six hundred forty-four thousand, seventy-one".