87070366421791 has 2 divisors, whose sum is σ = 87070366421792. Its totient is φ = 87070366421790.

The previous prime is 87070366421783. The next prime is 87070366421813. The reversal of 87070366421791 is 19712466307078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87070366421791 - 2³ = 87070366421783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87070366421711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535183210895 + 43535183210896.

It is an arithmetic number, because the mean of its divisors is an integer number (43535183210896).

Almost surely, 2^{87070366421791} is an apocalyptic number.

87070366421791 is a deficient number, since it is larger than the sum of its proper divisors (1).

87070366421791 is an equidigital number, since it uses as much as digits as its factorization.

87070366421791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 87070366421791 in words is "eighty-seven trillion, seventy billion, three hundred sixty-six million, four hundred twenty-one thousand, seven hundred ninety-one".