87021506285387 has 2 divisors, whose sum is σ = 87021506285388. Its totient is φ = 87021506285386.

The previous prime is 87021506285341. The next prime is 87021506285423. The reversal of 87021506285387 is 78358260512078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87021506285387 is a prime.

It is not a weakly prime, because it can be changed into another prime (87021506285317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43510753142693 + 43510753142694.

It is an arithmetic number, because the mean of its divisors is an integer number (43510753142694).

Almost surely, 2^{87021506285387} is an apocalyptic number.

87021506285387 is a deficient number, since it is larger than the sum of its proper divisors (1).

87021506285387 is an equidigital number, since it uses as much as digits as its factorization.

87021506285387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 87021506285387 in words is "eighty-seven trillion, twenty-one billion, five hundred six million, two hundred eighty-five thousand, three hundred eighty-seven".