87990837827 has 2 divisors, whose sum is σ = 87990837828. Its totient is φ = 87990837826.

The previous prime is 87990837797. The next prime is 87990837871. The reversal of 87990837827 is 72873809978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87990837827 - 2¹² = 87990833731 is a prime.

It is not a weakly prime, because it can be changed into another prime (87990837887) 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, 43995418913 + 43995418914.

It is an arithmetic number, because the mean of its divisors is an integer number (43995418914).

Almost surely, 2^87990837827 is an apocalyptic number.

87990837827 is a deficient number, since it is larger than the sum of its proper divisors (1).

87990837827 is an equidigital number, since it uses as much as digits as its factorization.

87990837827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 87990837827 in words is "eighty-seven billion, nine hundred ninety million, eight hundred thirty-seven thousand, eight hundred twenty-seven".