87653522563 has 2 divisors, whose sum is σ = 87653522564. Its totient is φ = 87653522562.

The previous prime is 87653522543. The next prime is 87653522623. The reversal of 87653522563 is 36522535678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87653522563 - 2⁵ = 87653522531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87653522563.

It is not a weakly prime, because it can be changed into another prime (87653522533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43826761281 + 43826761282.

It is an arithmetic number, because the mean of its divisors is an integer number (43826761282).

Almost surely, 2^87653522563 is an apocalyptic number.

87653522563 is a deficient number, since it is larger than the sum of its proper divisors (1).

87653522563 is an equidigital number, since it uses as much as digits as its factorization.

87653522563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072000, while the sum is 52.

The spelling of 87653522563 in words is "eighty-seven billion, six hundred fifty-three million, five hundred twenty-two thousand, five hundred sixty-three".