87051566781427 has 2 divisors, whose sum is σ = 87051566781428. Its totient is φ = 87051566781426.

The previous prime is 87051566781281. The next prime is 87051566781461. The reversal of 87051566781427 is 72418766515078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87051566781427 is a prime.

It is not a weakly prime, because it can be changed into another prime (87051566181427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43525783390713 + 43525783390714.

It is an arithmetic number, because the mean of its divisors is an integer number (43525783390714).

Almost surely, 2^{87051566781427} is an apocalyptic number.

87051566781427 is a deficient number, since it is larger than the sum of its proper divisors (1).

87051566781427 is an equidigital number, since it uses as much as digits as its factorization.

87051566781427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158054400, while the sum is 67.

The spelling of 87051566781427 in words is "eighty-seven trillion, fifty-one billion, five hundred sixty-six million, seven hundred eighty-one thousand, four hundred twenty-seven".