87691662803 has 2 divisors, whose sum is σ = 87691662804. Its totient is φ = 87691662802.

The previous prime is 87691662757. The next prime is 87691662833. The reversal of 87691662803 is 30826619678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87691662803 - 2⁶ = 87691662739 is a prime.

It is not a weakly prime, because it can be changed into another prime (87691662833) 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, 43845831401 + 43845831402.

It is an arithmetic number, because the mean of its divisors is an integer number (43845831402).

Almost surely, 2^87691662803 is an apocalyptic number.

87691662803 is a deficient number, since it is larger than the sum of its proper divisors (1).

87691662803 is an equidigital number, since it uses as much as digits as its factorization.

87691662803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 87691662803 in words is "eighty-seven billion, six hundred ninety-one million, six hundred sixty-two thousand, eight hundred three".